What are the most common Audi RS7 problems?

According to Au7o's analysis of 384+ owner reports, the 2018 Audi RS7 has 2 documented issues. The most frequently reported are: 4.0T Twin-Turbo Coolant System Degradation, 4.0T Carbon Deposit Accumulation. Of these, 1 is rated critical and should be addressed promptly.

Is the Audi RS7 reliable?

The 2018 Audi RS7 has 2 known issues documented across 384+ owner reports. 1 issue is rated critical: 4.0T Twin-Turbo Coolant System Degradation. 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 Audi RS7 problems?

Repair costs for known Audi RS7 issues range from $700 to $2,800, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 4.0T Twin-Turbo Coolant System Degradation, typically costs $900-$2,800 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2014-2026 Audi RS7 4.0T Twin-Turbo Coolant System Degradation?

The RS7 4.0T V8 turbo coolant lines and connections degrade from thermal cycling. The high-performance application generates more heat than other 4.0T models, accelerating coolant line failure. Repairs typically run $900-$2,800. Severity: high.

What is the 2014-2026 Audi RS7 4.0T Carbon Deposit Accumulation?

The RS7 4.0T accumulates carbon on intake valves at an accelerated rate due to the performance tune. Deposit buildup reduces airflow and causes misfires, rough idle, and measurable power loss. Repairs typically run $700-$1,500. Severity: medium.

Audi · Known Issues

2018 Audi RS7 Problems: 2 Known Issues

2018 model year · 384+ owner reports · Updated September 2026

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According to Au7o's analysis of 384+ owner reports, the 2018 Audi RS7 has 2 documented known issues, with 1 rated critical. The most serious is 4.0T Twin-Turbo Coolant System Degradation ($900-$2,800 repair). The most commonly reported issue is 4.0T Carbon Deposit Accumulation with 260 owner reports. Across all issues with published estimates, repair costs range from $700 to $2,800. DIY maintenance guides at au7o.io.

2018 Audi RS7 Problems: 2 Known Issues

All 2 Known Issues

2014-2026 Audi RS7: 4.0T Twin-Turbo Coolant System Degradation#

Common Symptoms

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2014-2026 Audi RS7: 4.0T Carbon Deposit Accumulation#