Kia · Known Issues
2010-2025 Kia Forte Problems: 31 Known Issues
2010-2025 model years · 1,257+ owner reports · Updated September 2026
All years · All trims · All engines
Choose the year and equipment for your written issues and visual request.
2010-2025 model years · 1,257+ owner reports · Updated September 2026
All years · All trims · All engines
Choose the year and equipment for your written issues and visual request.
Interest applies to the selected vehicle and configuration; it is not a reservation. Voting stores a first-party identifier for up to 180 days to prevent repeat votes. No account or email is needed. Clearing cookies or using another device may count separately. Privacy
Visual coming soon
Your interest helps us choose what to build next.
Visual Known Issues · Coming soon
$4.99/month plus taxes at launch · No payment today
Choose a year to request this visual. Trim and engine are optional; omitted trim is Not specified.
According to Au7o's analysis of 1,257+ owner reports, the 2010-2025 Kia Forte has 31 documented known issues, with 12 rated critical. The most serious are Nu 2.0L GDI Engine Knocking and Oil Consumption ($0-$5,500 repair), ABS/HECU Brake-Fluid Leak Causing Electrical Short and Engine-Bay Fire, 7-Speed D7UF1 Dry Dual-Clutch (DCT) Judder and Slipping on 1.6T GT Models ($1,800-$4,200 repair), No Engine Immobilizer on Turn-Key Ignition Models - Trivially Defeated Steering Lock Enables 'Kia Boyz' USB Theft ($0-$500 repair), Connecting Rod Bearing Failure Causing Engine Seizure, Sudden Stall and Fire Risk ($4,000-$8,000 repair), Under-Torqued Lower Steering Column U-Joint Bolt Can Loosen and Detach the Column From the Steering Rack ($0-$150 repair), Improperly Welded Right Front Lower Control Arm Can Crack and Separate From the Crossmember ($0-$500 repair), Forward Collision-Avoidance Assist (FCA) Phantom Braking and Repeated 'Check FCA System' Warnings ($0-$400 repair), Airbag Control Unit Electrical Fault - Airbags May Not Deploy in a Crash, Trunk Latch Pawl Thermal Cracking Disables the Interior Emergency Trunk Release (FMVSS 401 Non-Compliance) ($0-$250 repair), Improperly Cast Front Left Steering Knuckle Can Crack and Cause Loss of Steering Control ($0-$600 repair) and Crankshaft Position Sensor Failure Causing Hot-Restart Stall and Intermittent No-Start (P0335) ($120-$400 repair). The most commonly reported issue is CVT Shudder and Hesitation Under Acceleration with 523 owner reports. Across all issues with published estimates, repair costs range from $50 to $8,000. DIY maintenance guides at au7o.io.
SUSPENSION:FRONT:CONTROL ARM:LOWER ARM
Kia America, Inc. (Kia) is recalling certain 2023 Forte vehicles. The right front lower control arm may have been improperly welded, which can cause it to fail.
STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM
Kia America, Inc. (Kia) is recalling certain 2023 Forte vehicles. Due to a manufacturing error, the front left steering knuckle may crack, which can result in a loss of steering control.
STEERING:COLUMN
Kia Motors America (Kia) is recalling certain 2021-2022 Rio and Forte vehicles. A bolt in the steering column may not be secured properly, which can cause the steering column to detach from the steering rack and result in a loss of steering control.
SUSPENSION:FRONT:CONTROL ARM:LOWER ARM
Kia America, Inc. (Kia) is recalling certain 2023 Forte vehicles. The right front lower control arm may have been improperly welded, which can cause it to fail.
AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE
Kia Motors America (Kia) is recalling certain 2021 Telluride, K5, and Forte vehicles. The Occupant Classification and Detection System (OCS/ODS) unit may not detect the presence of a child restraint system in the front passenger seat. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."
Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.
Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.
According to Au7o's analysis of 1,257+ owner reports, the 2010-2025 Kia Forte has 31 documented issues. The most frequently reported are: Nu 2.0L GDI Engine Knocking and Oil Consumption, ABS/HECU Brake-Fluid Leak Causing Electrical Short and Engine-Bay Fire, 7-Speed D7UF1 Dry Dual-Clutch (DCT) Judder and Slipping on 1.6T GT Models. Of these, 12 are rated critical and should be addressed promptly.
The 2010-2025 Kia Forte has 31 known issues documented across 1,257+ owner reports. 12 issues are rated critical: Nu 2.0L GDI Engine Knocking and Oil Consumption and ABS/HECU Brake-Fluid Leak Causing Electrical Short and Engine-Bay Fire and 7-Speed D7UF1 Dry Dual-Clutch (DCT) Judder and Slipping on 1.6T GT Models and No Engine Immobilizer on Turn-Key Ignition Models - Trivially Defeated Steering Lock Enables 'Kia Boyz' USB Theft and Connecting Rod Bearing Failure Causing Engine Seizure, Sudden Stall and Fire Risk and Under-Torqued Lower Steering Column U-Joint Bolt Can Loosen and Detach the Column From the Steering Rack and Improperly Welded Right Front Lower Control Arm Can Crack and Separate From the Crossmember and Forward Collision-Avoidance Assist (FCA) Phantom Braking and Repeated 'Check FCA System' Warnings and Airbag Control Unit Electrical Fault - Airbags May Not Deploy in a Crash and Trunk Latch Pawl Thermal Cracking Disables the Interior Emergency Trunk Release (FMVSS 401 Non-Compliance) and Improperly Cast Front Left Steering Knuckle Can Crack and Cause Loss of Steering Control and Crankshaft Position Sensor Failure Causing Hot-Restart Stall and Intermittent No-Start (P0335). 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.
Repair costs for known Kia Forte issues range from $0 to $8,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Nu 2.0L GDI Engine Knocking and Oil Consumption, typically costs $0-$5,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
Reliability varies across model years of the Kia Forte. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2010-2025 Kia Forte with 31 documented issues documented across 1,257+ owner reports.
The 2nd generation Forte with the Nu 2.0L GDI engine (2014-2018) can develop engine knocking and excessive oil consumption. Similar to the Theta II issues but in the Nu engine family, piston ring wear leads to oil blow-by and cylinder scoring. Kia extended warranty coverage under… Repairs typically run $0-$5,500. Severity: high.
NHTSA recall 23V652000 (Kia SC284) covers certain 2010-2013 Forte and Forte Koup vehicles equipped with Electronic Stability Control. The Hydraulic Electronic Control Unit (HECU) may experience an electrical short that can cause an engine-compartment fire while the vehicle is par… Severity: high.
The Forte GT (and GT-Line with the 1.6L Gamma T-GDI) uses the D7UF1 seven-speed dry dual-clutch transmission rather than the IVT used on 2.0L cars. The dry clutch friction material glazes and the clutch actuator adaptation drifts, producing a body-shaking judder when creeping awa… Repairs typically run $1,800-$4,200. Severity: high.
Forte models built with a mechanical turn-key ignition (rather than push-button start with a smart key) were sold in the US without an engine immobilizer. The steering-column shroud can be pried off and the ignition lock cylinder pulled, exposing a splined shaft that spins with t… Repairs typically run $0-$500. Severity: high.
Excessive connecting rod bearing wear on the Theta II and Nu engines can cause the engine to knock, seize, and stall without warning while driving, with a documented risk of an engine-compartment fire. This is the failure mode behind the NHTSA/Kia KSDS recall and the Hyundai-Kia… Repairs typically run $4,000-$8,000. Severity: high.
A build-window assembly defect on BD-generation Forte sedans built May 28, 2021 through March 8, 2022 (and companion Rio models). The supplemental torque wrench on the assembly line failed to properly tighten the lower steering column universal-joint pinch bolt that clamps the in… Repairs typically run $0-$150. Severity: high.
A supplier welding defect on 2023 Forte sedans: one of the joint connection points where the right front lower control arm attaches to the front crossmember was not welded to specification. The weld can crack under normal suspension loading and the arm can fail outright, which le… Repairs typically run $0-$500. Severity: high.
BD-generation Fortes fitted with Forward Collision-Avoidance Assist use a windshield-mounted mono camera plus a front radar. Owners across the Forte forums report the system applying the brakes hard with nothing ahead - typically triggered by an oncoming car on an undivided road,… Repairs typically run $0-$400. Severity: high.
Two Kia safety recalls match this page’s retained year groups. Under 18V363000 (SC165), the airbag control unit in certain 2010-2013 Forte vehicles can suffer electrical overstress during a frontal crash, preventing the frontal airbags and seatbelt pretensioners from deploying. U… Severity: high.
On 2016-2018 Forte sedan and Forte Koup (and the related 2018-2019 Rio), repeated high-temperature soak in the trunk area causes a thermal crack to develop in the pawl of the trunk latch assembly. Once the pawl cracks, the glow-in-the-dark interior emergency release handle no lon… Repairs typically run $0-$250. Severity: high.
A narrow-build defect on 2023 Forte sedans assembled October 21 through November 7, 2022. The supplier's casting process for the front left steering knuckle ran out of specification on a single day - May 13, 2022 - producing knuckles with internal porosity/voids. A defective knuc… Repairs typically run $0-$600. Severity: high.
The CKP sensor on the Forte becomes heat-sensitive as it ages: the signal drops out once the engine bay is hot, so the engine stalls when coming to a stop or at idle, then refuses to restart until it cools for 10-20 minutes. Owners describe the car cranking normally with no spark… Repairs typically run $120-$400. Severity: high.
The IVT (Intelligent Variable Transmission, Kia's name for their CVT) in the 2019-2024 Forte develops a shuddering sensation during light-to-moderate acceleration, particularly from stops and at speeds between 20-45 mph. The issue is caused by the CVT chain and pulley interface w… Repairs typically run $0-$4,500. Severity: medium.
The UVO/AVN infotainment head unit hangs during boot on the UVO logo, or the display goes black at random while driving, taking the radio, Bluetooth phone/audio, navigation and the rear-view camera image with it. Some cars recover on the next key cycle or when reverse is selected… Repairs typically run $0-$1,200. Severity: medium.
On BD-generation Fortes the intake camshaft phaser is commanded by an oil control valve (OCV/CVVT solenoid) mounted in the front of the head. Because the 2.0 Nu is a known oil consumer, the sump often runs low and the remaining oil gets heat-cycled and sludgy; the fine screen and… Repairs typically run $90-$450. Severity: medium.
The YD-generation Forte's conventional six-speed automatic (A6GF1 behind the 1.8/2.0 Nu, A6MF2 behind the 1.6T) wears the aluminium valve-body bores that carry the two pressure-reducing valves and the torque-converter-clutch control valve. As the bores egg out, solenoid feed pres… Repairs typically run $450-$2,200. Severity: medium.
Forte 2.0L Nu cars that consume oil push unburned oil ash through the exhaust, which poisons and eventually plugs the washcoat on the close-coupled (manifold) converter and the underfloor converter. Owners see P0420 catalyst-efficiency-below-threshold, sometimes with a rotten-egg… Repairs typically run $600-$2,500. Severity: medium.
Sunroof-equipped Fortes route water from the sunroof tray through four small rubber drain hoses down the A- and C-pillars. Pollen, pine needles, and road grit pack the upper end of the hose; once blocked, the tray overflows past the seal and water runs down inside the A-pillar in… Repairs typically run $0-$600. Severity: medium.
Owners repeatedly replace low-beam headlight bulbs, sometimes multiple times in a year. The root cause is frequently a failing headlamp socket/pigtail connector that overheats and melts (a high-resistance/loose-connection condition), rather than defective bulbs. Kia issued campai… Repairs typically run $50-$300. Severity: medium.
The star-shaped rubber flexible coupler inside the electric power-steering (MDPS) motor wears prematurely, producing a distinct click, clunk, or knock felt through the steering wheel and column when turning, going over bumps, or maneuvering at low speed. Kia acknowledged the prem… Repairs typically run $150-$600. 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.