Audi A7 vs Audi S7
The short answer
Based on available data, the Audi S7 comes out ahead of the Audi A7 on 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
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…
S7
Overall
Sentiment is divided and heavily dependent on the specific generation and powertrain. The vehicle is universally praised for its styling, which is noted to age exceptionally well, its potent performance, and its refined, high-quality interior. However, significant concerns center on reliability and maintenance costs, with a stark generational divide.
Best version to buy
Insufficient owner data available to declare a consensus "best" version. Data suggests a strong preference for the supercharged 3.0L V6 in the A7 over the turbocharged V8 in the S7 for its perceived reliability and lack of lag, though this is not a direct S7 comparison.
Known issues
- **C7 Generation (4.0L Twin-Turbo V8):** * Turbocharger failure due to defective oil screen/strainer: Catastrophic failure leading to engine damage, subject of a manufacturer recall and reimbursement program. Frequency: very frequent.
- **C8 Generation (2.9L Twin-Turbo V6 & 48V System):** * Alternator/48V mild-hybrid system battery issues: Subject of a recall. Frequency: recurrent. * Leaky turbo seals: Mentioned as a known issue. Frequency: isolated.
- **General (Across Generations):** * High cost of repairs and parts: Extremely high parts costs cited (e.g., a single headlight at $13,000 USD). Frequency: very frequent.
The verdict
The Audi A7 is the better choice for most buyers.
It has stronger reliability sentiment in owner reports than the Audi S7, based on the data above. If the specific known issues on the Audi A7 are a dealbreaker, the Audi S7 is worth a closer look instead.
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Common problems by model year
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Frequently asked questions
Which is more reliable, the Audi A7 or the Audi S7?
Owner reports lean more positive on reliability for the Audi A7 than the Audi S7. See the known issues comparison above for the specific concerns owners report on each.
Which is better for families, the Audi A7 or the Audi S7?
The Audi A7 seats more passengers than the Audi S7 on its catalogued best-equipped version. Body type also differs: the Audi A7 is classed as a Liftback, the Audi S7 as a Liftback.
Which has better fuel economy, the Audi A7 or the Audi S7?
The EPA rates the 2025 Audi A7 at 25 mpg combined and the 2025 Audi S7 at 22 mpg, depending on the version.
Which is cheaper to maintain, the Audi A7 or the Audi S7?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Audi S7 than the Audi A7. See the known issues comparison above.