Audi
A6
Audi
A7
Audi A6 vs Audi A7: 2025 Comparison
The short answer
Based on available data, the Audi A7 comes out ahead of the Audi A6 on fuel economy. 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
A6
Overall
Sentiment is sharply divided by generation and powertrain. For the C7 (approx. 2012-2018) and C8 (approx. 2019-2023) generations, owner feedback is generally positive, praising the cars for their refined driving experience, comfortable and quiet ride, spacious interiors, and strong performance from the 3.0-liter engines (both TFSI and TDI). The A6 Allroad variant, in particular, receives high marks for its air suspension comfort, practicality, and impressive highway fuel economy.
Best version to buy
For the C7/C8 generations, the A6 Allroad 55 TDI (in Europe) and the A6 3.0T (55 TFSI) are highly recommended for their robust power delivery, torque, and reported reliability. The Prestige trim is favored for its comprehensive technology and comfort features, including the head-up display, massaging seats, and superior sound insulation.
Known issues
- ⚠High maintenance and repair costs: very frequent. General concerns about long-term reliability and expensive out-of-warranty repairs: very frequent. Wireless CarPlay connectivity issues (dropping, failure to connect): recurrent.
A7
Overall
Overwhelmingly positive sentiment regarding the driving experience, design, and long-term reliability of the 3.0-liter supercharged V6 gasoline engine (3.0T) and 3.0-liter TDI diesel powertrains. The A7 is consistently praised for its gorgeous, timeless design, exceptional comfort, refined handling with Quattro all-wheel drive, and practical hatchback body style. Owner feedback indicates high satisfaction with the vehicle's performance as a daily driver and long-distance cruiser, with specific acclaim for its quiet cabin, comfortable seats, and high-quality interior build.
Best version to buy
The 2016-2018 model years with the 3.0T supercharged V6 gasoline engine (CREC version, 333 hp) are most frequently recommended. This iteration is noted for having design revisions that address earlier potential issues like carbon buildup (via dual port and direct injection) and updated chain tensioners.
Known issues
- ⚠Higher maintenance and repair costs compared to mainstream brands. Labor and part costs at dealerships are noted as expensive. Frequency: very frequent.
- ⚠Water pump and PCV (Positive Crankcase Ventilation) valve failure. Common replacement items typically needed between 60,000-100,000 miles (97,000-161,000 km). Frequency: very frequent.
- ⚠Emissions system complexity (TDI models). The Diesel Particulate Filter (DPF), Selective Catalytic Reduction (SCR) system, EGR, and associated sensors are potential failure points with high replacement costs, especially beyond 100,000 miles…
The verdict
The Audi A7 is the better choice for most buyers.
It has stronger reliability sentiment in owner reports than the Audi A6, based on the data above. If the specific known issues on the Audi A7 are a dealbreaker, the Audi A6 is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the Audi A6 or the Audi A7?
Owner reports lean more positive on reliability for the Audi A7 than the Audi A6. See the known issues comparison above for the specific concerns owners report on each.
Which is better for families, the Audi A6 or the Audi A7?
Both seat a similar number of passengers based on our data. The Audi A6 is classed as a Sedan, the Audi A7 as a Liftback, which affects cargo space and ride height for family use.
Which has better fuel economy, the Audi A6 or the Audi A7?
The Audi A7 is more fuel-efficient on paper: 1.3-1.6 L/100km combined versus 6.7-7.8 L/100km for the Audi A6, based on the best-equipped catalogued version of each.
Which is cheaper to maintain, the Audi A6 or the Audi A7?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Audi A6 than the Audi A7. See the known issues comparison above.