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Audi · Known Issues

2023 Audi RS5 Problems: 2 Known Issues

2023 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Vehicle data and repair guidance on this site are compiled with AI assistance and may contain errors. Always verify with your service manual or a qualified mechanic.

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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2023 Audi RS5 has 2 documented known issues. None of the listed issues is rated critical; this is not a complete reliability assessment. Across all issues with published estimates, repair costs range from $600 to $1,500. DIY maintenance guides at au7o.io.

In This Article

  • RS5 Engine1
  • RS5 Cooling1
  • Recalls2
  • FAQ
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In This Article

  • Engine1
  • Cooling1
  • Recalls2
  • FAQ

All 2 Known Issues

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On the 2018-2026 Audi RS5, the 2.9L twin-turbo V6 uses direct injection exclusively, which means no fuel washes over the intake valves to clean them. Carbon deposits accumulate on intake valves, reducing airflow and causing misfires and rough running.

This issue also affects: Audi S8, Audi A4, Audi A1

Common Symptoms

  • Rough idle
  • Reduced power
  • Misfires
  • Hesitation on acceleration

How to Fix

Confirm intake-valve carbon buildup by scanning for misfire faults, reviewing fuel trims, and inspecting the intake valves with a borescope through the intake ports after removing the intake manifold. The proper repair is an intake-valve cleaning service, typically walnut-shell blasting each intake port with the valves closed, then replacing the intake manifold gaskets and any disturbed PCV or breather seals before clearing adaptations and road-testing. If misfires persist, inspect and replace worn spark plugs or ignition coils as needed, since heavy deposits can foul plugs and mimic ignition faults. Typical cost is about $800-$1,500 depending on labor rates and how much disassembly is required.

Typical repair cost:$600 - $1,500

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Community Reported
Medium Confidence

On the 2021-2024 Audi RS5 2.9L V6 TFSI, current Audi TSB 2070349/4 applies only to 2021-2024 RS5 Coupe and RS5 Sportback V6 vehicles when the customer reports coolant loss/leak, a coolant warning or an engine warning and the workshop identifies the coolant pump as the leak source. Audi states that up to 3 ml of coolant on the pump drip cup over 100 operating hours can be normal seal lubrication/cooling. Dried coolant deposits on the vacuum connection alone are not clear evidence of a leak. Coolant contamination at change-over valve N649 may produce P0299 as a secondary condition. The bulletin does not support a universal turbocharger coolant-feed-line cracking defect or the frozen line part numbers.

This issue also affects: Audi A1, Audi A3, Audi A6

Common Symptoms

  • Coolant loss or visible leak
  • Coolant warning lamp
  • Engine warning lamp

How to Fix

Locate the leak before replacing parts. Clean and dry the area, fill the cooling system to maximum, inspect at idle and at engine speeds up to about 2,500 rpm, and perform the Workshop Manual cooling-system leak test. If no further leak is detected, continue observation without replacing parts. If a leak recurs, replace only the component or components causing the leak and document the finding with clear photos or video; a pump-leak repair also requires a photo of the pump production date. Inspect the vacuum circuit and N649 when contamination or P0299 is present, following current Audi workshop and parts information.

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Manually Verified
High ConfidenceVerifiedReviewed Jul 2026
NHTSA Recalls2 recalls

AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2023 Audi S5 Cabriolet, A4 Allroad, Q5 Sportback, A3 Sedan, S5 Sportback, SQ7, TT Coupe, TT Roadster, RS5 Sportback, 2024 A8, E-Tron Quattro, E-Tron Sportback Quattro, Q8, RSQ8, 2023-2024 Q3, Q5, and Q7 vehicles. An electrical connection in the front passenger seat for the occupant detection system (ODS) control module may loosen and deactivate the front passenger air bag.

Campaign #24V25100003/04/2024

EQUIPMENT:OTHER:LABELS

Volkswagen Group of America, Inc. (Audi) is recalling certain 2022 RS5 coupe and RS5 Sportback vehicles. The value for the maximum combined weight of occupants and cargo on the B-pillar Tire and Loading information label is incorrect. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire and Loading Information."

Campaign #22V10200023/02/2022

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

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Frequently Asked Questions

What are the most common Audi RS5 problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2023 Audi RS5 has 2 documented issues. The most frequently reported are: Direct Injection Carbon Buildup on Intake Valves, 2021-2024 RS5 V6 Coolant-Pump Leak Diagnosis - TSB 2070349/4. None are rated critical, but regular maintenance is recommended.

Is the Audi RS5 reliable?

The 2023 Audi RS5 has 2 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. None of the matching records is rated critical; this is not a complete reliability assessment. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Audi RS5 problems?

Repair costs for known Audi RS5 issues range from $600 to $1,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2018-2026 Audi RS5 Direct Injection Carbon Buildup on Intake Valves?

The 2.9L twin-turbo V6 uses direct injection exclusively, which means no fuel washes over the intake valves to clean them. Carbon deposits accumulate on intake valves, reducing airflow and causing misfires and rough running. Repairs typically run $600-$1,500. Severity: medium.

What is the 2021-2024 Audi RS5 2021-2024 RS5 V6 Coolant-Pump Leak Diagnosis - TSB 2070349/4?

Current Audi TSB 2070349/4 applies only to 2021-2024 RS5 Coupe and RS5 Sportback V6 vehicles when the customer reports coolant loss/leak, a coolant warning or an engine warning and the workshop identifies the coolant pump as the leak source. Audi states that up to 3 ml of coolant… 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 compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.