Audi
RS7
BMW
M5
Audi RS7 vs BMW M5: 2024 Comparison
The short answer
Based on available data, the BMW M5 comes out ahead of the Audi RS7 on fuel economy and power. Check the specs table and owner sentiment below for the full comparison before deciding between the two. Both are covered by real owner reports on CarWizz.
Specs side by side
What owners say
RS7
Overall
Owner sentiment is generally positive, with the RS7 praised as a fast, comfortable, and capable grand tourer that blends performance with daily usability. The twin-turbo 4.0L V8 engine is frequently highlighted for its immense power and linear delivery, providing a "blazing fast" and "spectacularly fast" experience. The car is consistently described as comfortable for long-distance cruising, with a refined interior and a balance of luxury and sportiness.
Best version to buy
Insufficient owner data available to declare a consensus "best" version. Discussions reference various model years and trims (e.g., 2016 RS7 Performance, 2024 RS7 Performance with increased power) without a clear preference emerging from the community feedback.
Known issues
- ⚠High Cost of Maintenance and Repairs: Very expensive routine maintenance, brake jobs (cited at ~$4,000 USD), and part replacements. Owners note a significant "RS Tax" on model-specific components. Frequency: very frequent.
- ⚠Turbo Oil Screen/Strainer Failure: A major, widespread issue primarily affecting the C7/C7.5 generation's 4.0T V8. Faulty screens can clog, leading to turbocharger failure and catastrophic engine damage.
- ⚠Suspension Comfort Degradation: Owners report the adaptive suspension in Comfort mode losing its plush, "gliding" quality over time, becoming noticeably firmer. Potential causes include worn components or calibration issues.
M5
Overall
Sentiment is sharply divided by generation and is heavily influenced by ownership costs. The E60 generation (V10 S85 engine) is universally described as an unreliable "money pit" and "heap of junk" with catastrophic engine failure risks, particularly concerning rod bearings, leading to extremely high maintenance costs. The F90 generation (V8 S63 engine) receives a more positive reception for its brutal performance, all-wheel drive capability, and modern luxury, but is still acknowledged as a very expensive vehicle to maintain properly.
Best version to buy
F90 Competition (pre-hybrid V8): This generation is frequently cited as the "last good M5," praised for its reliability relative to the V10, monstrous performance from its twin-turbo V8, and attractive design. It is seen as a peak of the traditional M5 formula before the added weight and complexity of the hybrid G90.
Known issues
- ⚠Catastrophic engine failure (E60 V10 S85): Rod bearing failures leading to seized engines; described as one of the least reliable BMW engines ever made. Frequency: very frequent.
- ⚠Extremely high maintenance/repair costs: Described as an "absolute fortune" to maintain, with reports of $20,000+ spent over 10 years for low-mileage cars; major service bills anticipated as mileage approaches 100,000 km.
- ⚠Hybrid system and weight drawbacks (G90): Numb brake feel due to regen, excessive mass, and electromechanical systems that detract from driver engagement; noted quality control issues like missing door assemblies and non-functional heaters…
The verdict
The BMW M5 is the better choice for most buyers.
It has better fuel economy on its best-equipped version than the Audi RS7, based on the data above. If power matters more to you than running costs, the Audi RS7 is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the Audi RS7 or the BMW M5?
Owner reports show similar reliability sentiment for the Audi RS7 and the BMW M5. Check the known issues listed above for specific differences between the two.
Which is better for families, the Audi RS7 or the BMW M5?
Both seat a similar number of passengers based on our data. The Audi RS7 is classed as a Liftback, the BMW M5 as a Station wagon, which affects cargo space and ride height for family use.
Which has better fuel economy, the Audi RS7 or the BMW M5?
The BMW M5 is more fuel-efficient on paper: 2.0 L/100km combined versus 12-12.5 L/100km for the Audi RS7, based on the best-equipped catalogued version of each.
Which is cheaper to maintain, the Audi RS7 or the BMW M5?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Audi RS7 than the BMW M5. See the known issues comparison above.