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Mazda · Known Issues

2017 Mazda CX-3 Problems: 11 Known Issues

2017 model year · 1,800+ owner reports · Updated September 2026

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Issue summary

According to Au7o's analysis of 1,800+ owner reports, the 2017 Mazda CX-3 has 11 documented known issues, with 1 rated critical. The most serious is 1.5L SkyActiv-D Frequent DPF Regeneration and Engine Oil Dilution (P2459) ($400-$2,500 repair). The most commonly reported issue is Automatic Transmission Shudder with 950 owner reports. Across all issues with published estimates, repair costs range from $150 to $2,500. DIY maintenance guides at au7o.io.

In This Article

  • CX-3 Emissions1
  • CX-3 Electrical3
  • CX-3 Exterior2
  • CX-3 Transmission1
  • CX-3 Engine1
  • CX-3 Body/Panels1
  • CX-3 HVAC1
  • CX-3 Brakes1
  • Recalls2
  • FAQ
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In This Article

  • Emissions1
  • Electrical3
  • Exterior2
  • Transmission1
  • Engine1
  • Body/Panels1
  • HVAC1
  • Brakes1
  • Recalls2
  • FAQ

All 11 Known Issues

NHTSA Recalls2 recalls

BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

Mazda North American Operations (Mazda) is recalling certain 2014-2018 Mazda3 and 2016-2021 CX-3 vehicles. The rearview camera image may not display properly by showing a flickering or distorted image.

Campaign #23V48700014/07/2023

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3, Mazda6, 2019 CX-3, 2018-2019 MX-5, CX-5, CX-9, and 2019-2020 Mazda2 vehicles. The impeller inside the low-pressure fuel pump may crack and deform, potentially causing the fuel pump to fail.

Campaign #21V87500012/11/2021

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

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Other Mazda Models

Mazda CX-530Mazda CX-6027Mazda CX-5026Mazda MX-5 Miata22Mazda MX-621Mazda Mazda319

Frequently Asked Questions

What are the most common Mazda CX-3 problems?

According to Au7o's analysis of 1,800+ owner reports, the 2017 Mazda CX-3 has 11 documented issues. The most frequently reported are: 1.5L SkyActiv-D Frequent DPF Regeneration and Engine Oil Dilution (P2459), Automatic Transmission Shudder, Skyactiv 2.0L Intake Valve Carbon Buildup. Of these, 1 is rated critical and should be addressed promptly.

Is the Mazda CX-3 reliable?

The 2017 Mazda CX-3 has 11 known issues documented across 1,800+ owner reports. 1 issue is rated critical: 1.5L SkyActiv-D Frequent DPF Regeneration and Engine Oil Dilution (P2459). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Mazda CX-3 problems?

Repair costs for known Mazda CX-3 issues range from $0 to $2,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 1.5L SkyActiv-D Frequent DPF Regeneration and Engine Oil Dilution (P2459), typically costs $400-$2,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2016-2021 Mazda CX-3 1.5L SkyActiv-D Frequent DPF Regeneration and Engine Oil Dilution (P2459)?

Europe/Australia/Japan market CX-3s with the 1.5 SkyActiv-D (SH-VPTS) diesel suffer chronically frequent DPF regeneration. Because Mazda regenerates by injecting extra fuel on the exhaust stroke, unburnt diesel washes past the rings into the sump - the oil level climbs above full… Repairs typically run $400-$2,500. Severity: high.

What is the 2016-2021 Mazda CX-3 Automatic Transmission Shudder?

The 6-speed automatic transmission in the CX-3 develops a shudder or vibration during light-throttle acceleration at low to moderate speeds (20-45 mph). The torque converter lockup clutch is the typical culprit, with worn friction material causing slip-stick behavior. A transmiss… Repairs typically run $150-$1,800. Severity: medium.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 1,800+ owner reports, NHTSA recalls, TSBs, and automotive forums.

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On the 2016-2021 Mazda CX-3 1.5L SkyActiv-D SH-VPTS diesel, europe/Australia/Japan market CX-3s with the 1.5 SkyActiv-D (SH-VPTS) diesel suffer chronically frequent DPF regeneration. Because Mazda regenerates by injecting extra fuel on the exhaust stroke, unburnt diesel washes past the rings into the sump - the oil level climbs above full and the dipstick carries an 'X' mark specifically to flag excessive dilution. Short-trip use makes it worse because regens abort before completion, so soot builds faster and the cycle tightens. P2459 (DPF regeneration frequency) is the code the ECM sets when it sees the filter loading much faster than expected. Left alone this destroys bearings through diluted oil and shortens DPF life. Leaking or out-of-spec fuel injectors are the most commonly found root cause; glow plug and EGR faults also drive it. This is a diesel-only failure and does not apply to the 2.0L Skyactiv-G petrol cars sold in North America.

Common Symptoms

  • Engine oil level rises above full on the dipstick
  • DPF regeneration triggers every 100-200 km
  • Diesel smell in the engine oil
  • DPF warning light on the dash
  • Poor fuel economy and sluggish performance
  • Regeneration will not complete on short trips

How to Fix

Do not just clear the code or force a static regen - find the root cause. Test injector return/leak-off first; defective injectors are the usual finding and must be replaced and coded. Check EGR and glow plug operation. Once the cause is fixed, change the oil immediately with the correct low-SAPS specification oil, and consider a professional DPF clean if the filter is already loaded. Owners who do only short trips need a periodic sustained highway run to let regens complete. If the oil level is at or over the 'X' mark, change it now regardless of service interval. DPF delete/remap is illegal for road use in most markets and voids the remaining warranty.

Typical repair cost:$400 - $2,500

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026

On the 2016-2021 Mazda CX-3, the Connectivity Master Unit running MZD Connect locks up while driving: the screen goes to the Mazda logo, all inputs (touchscreen, commander knob, steering wheel controls) stop responding, and the unit reboots itself after roughly 10-20 seconds. Audio, navigation, Bluetooth phone and - critically - the reverse camera feed are all dead during the reboot cycle. On badly affected cars it repeats several times per drive. This is a firmware/CMU hardware fault, not a user setting, and it is one of the highest-volume complaints on the CX-3 owner forums across the whole 2016-2021 run.

Common Symptoms

  • Screen freezes on the Mazda logo then reboots while driving
  • No response from touchscreen or commander knob
  • Audio cuts out and returns after a restart
  • Backup camera unavailable during the reboot
  • Bluetooth phone call drops when the unit resets
  • Repeated resets on the same drive

How to Fix

First step is the free CMU software update at the dealer - check your version under Settings > System > Version Info, since later firmware materially reduced the lockups. A soft reset (hold Volume/Mute + Nav + Back together for about 10 seconds) recovers a frozen unit without a battery disconnect. If it keeps freezing on current firmware, the fix is CMU replacement, which Mazda has covered under warranty and goodwill for owners who escalated to Mazda tech support. A bad SD card or corrupt USB device can also trigger it - remove both when diagnosing.

Typical repair cost:$0 - $1,400

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026

On the 2016-2021 Mazda CX-3, cX-3 owners report the factory battery dying at 1-3 years, sometimes inside the first year, with a repeating pattern: the car sits two or three days and will not crank, i-stop stops functioning long before the battery is fully flat, and the dealer blames the owner's driving habits. Two things are going on. First, i-stop (and i-ELOOP where fitted) demands a high-cycle EFB/AGM-class battery, and fitting an ordinary flooded replacement guarantees a short life and i-stop errors. Second, forum threads point at a genuine parasitic draw, with owners referencing internal Mazda information bulletins on battery drain. The CMU staying awake is a frequent suspect on cars that also show the infotainment lockup fault.

Common Symptoms

  • Battery dead after the car sits two or three days
  • i-stop stops activating at traffic lights
  • Slow cranking that worsens over a week
  • Original battery fails within 1-3 years
  • Warning lights flicker or reset on start
  • Replacement battery also fails prematurely

How to Fix

Replace with the correct EFB/AGM-class battery to the factory specification - not a generic flooded battery - and have the dealer perform the battery configuration/reset so the charge control system learns the new battery. If the replacement also dies, do a real parasitic draw test: measure current after the modules go to sleep (allow 45-60 minutes) and pull fuses to isolate; the CMU/audio circuit is the usual finding on this platform. If i-stop stopped working but the car still starts, that is the early warning to test the battery, not a separate fault to chase. Charging one of these at home needs an AGM/EFB-capable charger.

Typical repair cost:$200 - $700

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Community Reported
Low ConfidenceVerifiedReviewed Aug 2026

On the 2016-2021 Mazda CX-3, water intrusion through the liftgate wiring harness grommet corrodes the rearview camera circuit, causing the backup camera image to flicker, distort, or fail to display when reverse is selected. Mazda recalled 2016-2021 CX-3 (alongside 2014-2018 Mazda3 5-door) under NHTSA campaign 23V487, Mazda internal recall 6023G. A camera that does not display a stable image violates FMVSS 111 and increases backup-collision risk. Owners commonly describe the picture rolling, showing horizontal lines, going to a blue/black screen, or working intermittently in wet weather before failing permanently.

Common Symptoms

  • Backup camera image flickers or rolls
  • Distorted or scrambled reverse camera picture
  • Blue or black screen instead of camera view
  • Camera works intermittently, worse after rain or a car wash
  • Camera image fails to appear when reverse is selected

How to Fix

Free recall remedy: dealer inspects the rearview camera and the liftgate harness, installs a seal/grommet countermeasure to keep water out of the connector, and replaces the camera if the image is already degraded. Check the VIN at nhtsa.gov/recalls or mazdausa.com/owners/recalls - a large share of used CX-3s still have this open. Out of warranty and outside the recall, replacement is a camera module plus harness repair.

Typical repair cost:$0 - $450

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High ConfidenceVerifiedReviewed Aug 2026

On the 2016-2021 Mazda CX-3, cX-3 owners repeatedly report long horizontal or diagonal windshield cracks that appear with no stone chip, no star and no impact point anywhere along the crack - typically starting at the edge of the glass and running across, often after a temperature swing or while the car is parked. This is a recurring complaint across Mazda's 2016-2021 range and is generally attributed to thin OEM glass combined with body/urethane stress at the A-pillar corners. Dealers routinely blame road debris, but the absence of any impact point is the diagnostic tell, and some owners have won warranty replacement on that basis.

Common Symptoms

  • Long crack appears with no visible chip or impact point
  • Crack starts at the edge of the glass and runs horizontally
  • Crack appears while parked or after a hot/cold swing
  • Repeat windshield cracks within months of replacement

How to Fix

Replace the windshield. Photograph the full length of the crack before replacement to show there is no impact origin - that photo is what wins a warranty claim; escalate past the service writer to Mazda corporate if the dealer refuses. Where aftermarket glass is fitted, insist on correct urethane bead and cure procedure, since a stressed or over-tight install is what causes repeat cracks a few months later. On cars with the forward camera, the driver-assist camera must be recalibrated after the glass is replaced.

Typical repair cost:$300 - $1,100

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026

On the 2016-2021 Mazda CX-3, cX-3 factory alloy wheels corrode early. White powdery aluminium oxide forms under the clear coat, usually starting at the rim lip and around the lug seats, then lifts the finish in flakes. It commonly appears within the first two or three years, and it is bad enough that Mazda has replaced corroded CX-3 alloys under warranty and in some cases slightly outside it. Beyond cosmetics, corrosion at the bead seat causes slow tyre leaks that get misdiagnosed as valve stems or punctures - a chronic slow leak on one wheel with no findable puncture is the tell.

Common Symptoms

  • White powdery corrosion on the wheel face or lip
  • Clear coat flaking or peeling off the alloy
  • Chronic slow tyre leak on one wheel with no puncture found
  • Pitting around the lug nut seats

How to Fix

Claim under the paint/finish portion of the new-vehicle warranty while the car still qualifies - document the wheels photographically at the first sign of white bloom, because dealers deny these claims once the finish has fully lifted. Out of warranty the options are refinishing (the bead seat must be cleaned back to clean metal and sealed, or the leak returns) or replacement. Avoid acidic wheel cleaners, which strip the clear coat and accelerate the process; wash off road salt through winter.

Typical repair cost:$150 - $900

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Community Reported
Low ConfidenceVerifiedReviewed Aug 2026
Community reported
950 owners

On the 2016-2021 Mazda CX-3, the 6-speed automatic transmission in the CX-3 develops a shudder or vibration during light-throttle acceleration at low to moderate speeds (20-45 mph). The torque converter lockup clutch is the typical culprit, with worn friction material causing slip-stick behavior. A transmission fluid change can temporarily resolve the issue, but severe cases require torque converter replacement.

Common Symptoms

  • Vibration or shudder during light acceleration at 20-45 mph
  • Feels like driving over rumble strips
  • Shudder disappears under hard acceleration or deceleration
  • Transmission temperature warning in extreme cases

How to Fix

Perform a complete transmission fluid drain and fill with Mazda ATF FW (not a flush). If shudder persists after fluid change, torque converter replacement is required. TCM reprogramming may also improve shift quality.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • BLAU/Ravenol CX-3 ATF-FZ drain-and-fill kit F2A1421-C
    OEMBLAU F2A1421-C / Mazda ATF-FZ 0000-FZ-113E-01 specification

    Measured drain-and-fill service for 2016-2021 CX-3 six-speed automatic Fitment/availability: Indexed direct page identifies five liters of ATF meeting Mazda 0000-FZ-113E-01 plus filter/service hardware, 2016-2021 CX-3 six-speed fitment, …

    Blauparts

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Owner tips & cautions

  • TipTry drain-and-fill (not flush) first - may resolve shudder for $150-200
  • TipChange transmission fluid every 30,000 miles as preventive maintenance
  • TipIf fluid change does not resolve it, torque converter replacement is the permanent fix - MazdaCX3Forum.com
Typical repair cost:$150 - $1,800

Research This Issue

Based on 950 owner reports

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Community Reported
High ConfidenceVerified950 owner reportsLast reported by owners Aug 2024Reviewed Feb 2026

On the 2016-2021 Mazda CX-3 2.0 Skyactiv-G, the 2016-2021 Mazda CX-3 with the 2.0L Skyactiv-G direct injection engine develops carbon deposits on the intake valves over time. Because direct injection sprays fuel directly into the combustion chamber rather than over the intake valves, there is no fuel wash to clean the valve backsides. Oil vapors from the PCV (Positive Crankcase Ventilation) system coat the intake valves and bake into hard carbon deposits. This gradually restricts airflow, causing misfires on cold starts, loss of low-end power, and reduced fuel efficiency. Using conventional oils with high volatility worsens the problem by producing more PCV vapors.

Common Symptoms

  • Check engine light with misfire codes, especially on cold starts
  • Gradual loss of low-end power and throttle response
  • Reduced fuel efficiency over time
  • Rough idle after extended parking
  • Fouled spark plugs
  • Hesitation during acceleration from stop

How to Fix

Typical repair cost:$400 - $1,200

Research This Issue

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Community Reported
Medium Confidence

On the 2016-2017 Mazda CX-3, on early-production CX-3s the rear-mount camera housing and the liftgate opener switch base sit hard against the painted liftgate skin. The mount edge chafes the paint, moisture gets under the film, and rust blooms outward in a ring around the camera and the switch. Mazda acknowledged this in a Dealer Repair Guidance document (R100/16A, 'Rust on Liftgate around Rear Mount Camera/Liftgate Opener Switch'), and changed the camera mount base shape and added a pad under the opener switch base for cars built from early 2017. It is cosmetic at first but perforates the liftgate skin if left, and it is one of the most consistently reported CX-3 body complaints on owner forums.

Common Symptoms

  • Paint bubbling in a ring around the rear camera
  • Rust around the liftgate opener switch
  • Blistered paint on the tailgate above the license plate
  • Rust bleeding out from under the camera trim

How to Fix

Mazda's own guidance is to strip and repaint the affected liftgate area and apply a protective film, plus fit the revised camera mount base and switch pad so the problem does not return. Many owners had this covered under the anti-perforation/paint warranty when caught early - dealers push back once the car is out of the paint warranty window, so document it as soon as bubbling appears. Simply painting over without the revised mount lets it come back.

Typical repair cost:$300 - $1,200

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026

On the 2016-2017 Mazda CX-3, separate from compressor failure, early CX-3s built before roughly September 2016 suffer refrigerant loss from the condenser or the evaporator core itself. The condenser sits low and forward with little protection and the early units used thin coil material that corrodes and weeps at the fin/tube joints; evaporator core leaks show up as a slow loss with an oily film in the HVAC case. Symptom pattern is cooling that fades over a season, then blows warm entirely - and it comes straight back a few weeks after a shop simply recharges it. Repeat recharging with no leak search is the single most common wasted spend on these cars.

Common Symptoms

  • A/C cools weakly then stops cooling entirely
  • Cooling performance drops off over a season
  • Oily residue on the condenser fins or in the HVAC case
  • A/C works again briefly after a recharge, then fails
  • Compressor cycles rapidly on and off

How to Fix

Dye or nitrogen leak-test before recharging. A leaking condenser is a front-end R&R and is the usual culprit on the front-mounted CX-3 unit; a leaking evaporator means pulling the dash, which is why shops quote so much more for it. Replace the receiver/drier whenever the system is opened, pull a proper vacuum, and recharge to the exact factory weight on the underhood label - overcharge is a common cause of poor cooling after a repair. Some early-build cars also had HVAC control-unit logic faults, so confirm the compressor is actually being commanded on before condemning the mechanical side.

Typical repair cost:$500 - $1,800

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026
Community reported
850 owners

On the 2016-2021 Mazda CX-3, cX-3 rear brakes produce excessive grinding, squealing, and scraping noises, often well before pads reach minimum thickness. The rear brake design with integrated parking brake drum-in-hat causes uneven pad contact and noise. Rear pads on the CX-3 also wear faster than expected due to the electronic brake force distribution (EBD) system applying more rear brake bias than typical.

Common Symptoms

  • Grinding or squealing from rear brakes
  • Scraping noise when brakes are first applied (especially after sitting overnight)
  • Rear pads wearing faster than front pads
  • Brake dust buildup on rear wheels disproportionate to front

How to Fix

Replace rear brake pads with higher-quality ceramic pads (Akebono, Bosch QuietCast). Clean and lubricate caliper slide pins and pad contact points with CRC Silaramic grease. Resurface or replace rotors if they have developed lip or scoring.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • AM AutoParts AM-2506058450 rear ceramic brake-pad set
    OEMAM-2506058450

    Verify VIN/drive and inspect rotors/calipers before ordering; this path does not cover 2019-2021.

    AM AutoParts
  • AM AutoParts AM-1064753972 rear ceramic brake-pad set
    OEMAM-1064753972

    Confirm VIN/drive/build and do not use it for 2016-2019.

    AM AutoParts
  • CRC 05361 Silaramic brake-system grease, 5-ounce tube
    OEMCRC 05361

    Lubricate approved caliper hardware, slide-pin and metal contact points during brake service Fitment/availability: Live direct product page identifies CRC 05361, brake-system component applications and Add to Cart. Apply sparingly only w…

    NAPA

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Owner tips & cautions

  • TipClean slide pins and apply brake grease to pad ears at every pad replacement
  • TipCheck rear brakes every 15,000 miles - they wear faster than fronts on CX-3. MazdaCX3Forum.com brake thread
Typical repair cost:$150 - $400

Research This Issue

Based on 850 owner reports

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Community Reported
High ConfidenceVerified850 owner reportsLast reported by owners Jul 2024Reviewed Feb 2026
get a full repair guide

What is the 2016-2021 Mazda CX-3 Skyactiv 2.0L Intake Valve Carbon Buildup?

The 2016-2021 Mazda CX-3 with the 2.0L Skyactiv-G direct injection engine develops carbon deposits on the intake valves over time. Because direct injection sprays fuel directly into the combustion chamber rather than over the intake valves, there is no fuel wash to clean the valv… Repairs typically run $400-$1,200. Severity: medium.

What is the 2016-2021 Mazda CX-3 MZD Connect CMU Freezes, Reboots and Loses Backup Camera Mid-Drive?

The Connectivity Master Unit running MZD Connect locks up while driving: the screen goes to the Mazda logo, all inputs (touchscreen, commander knob, steering wheel controls) stop responding, and the unit reboots itself after roughly 10-20 seconds. Audio, navigation, Bluetooth pho… Repairs typically run $0-$1,400. Severity: medium.

What is the 2016-2017 Mazda CX-3 Liftgate Paint Bubbling and Rust Around Rear Camera and Opener Switch?

On early-production CX-3s the rear-mount camera housing and the liftgate opener switch base sit hard against the painted liftgate skin. The mount edge chafes the paint, moisture gets under the film, and rust blooms outward in a ring around the camera and the switch. Mazda acknowl… Repairs typically run $300-$1,200. Severity: medium.

What is the 2016-2017 Mazda CX-3 A/C Condenser and Evaporator Refrigerant Leaks on Early Build Cars?

Separate from compressor failure, early CX-3s built before roughly September 2016 suffer refrigerant loss from the condenser or the evaporator core itself. The condenser sits low and forward with little protection and the early units used thin coil material that corrodes and weep… Repairs typically run $500-$1,800. Severity: medium.

What is the 2016-2021 Mazda CX-3 Premature Battery Failure and Parasitic Drain on i-stop Equipped Cars?

CX-3 owners report the factory battery dying at 1-3 years, sometimes inside the first year, with a repeating pattern: the car sits two or three days and will not crank, i-stop stops functioning long before the battery is fully flat, and the dealer blames the owner's driving habit… Repairs typically run $200-$700. Severity: medium.

What is the 2016-2021 Mazda CX-3 Rearview Camera Displays Flickering or Distorted Image (Recall 23V487 / Mazda 6023G)?

Water intrusion through the liftgate wiring harness grommet corrodes the rearview camera circuit, causing the backup camera image to flicker, distort, or fail to display when reverse is selected. Mazda recalled 2016-2021 CX-3 (alongside 2014-2018 Mazda3 5-door) under NHTSA campai… Repairs typically run $0-$450. Severity: medium.

What is the 2016-2021 Mazda CX-3 Windshield Stress Cracking With No Impact Point?

CX-3 owners repeatedly report long horizontal or diagonal windshield cracks that appear with no stone chip, no star and no impact point anywhere along the crack - typically starting at the edge of the glass and running across, often after a temperature swing or while the car is p… Repairs typically run $300-$1,100. Severity: medium.

What is the 2016-2021 Mazda CX-3 Rear Brake Noise and Premature Wear?

CX-3 rear brakes produce excessive grinding, squealing, and scraping noises, often well before pads reach minimum thickness. The rear brake design with integrated parking brake drum-in-hat causes uneven pad contact and noise. Rear pads on the CX-3 also wear faster than expected d… Repairs typically run $150-$400. Severity: low.

What is the 2016-2021 Mazda CX-3 Alloy Wheel Clear Coat Failure and White Corrosion Under the Finish?

CX-3 factory alloy wheels corrode early. White powdery aluminium oxide forms under the clear coat, usually starting at the rim lip and around the lug seats, then lifts the finish in flakes. It commonly appears within the first two or three years, and it is bad enough that Mazda h… Repairs typically run $150-$900. Severity: low.