DecodedCarsAudi A4 vs Audi S7
2025 Audi A4 vs 2025 Audi S7 — two rivals compared on efficiency, size, safety and reliability.
The short version
The Audi A4 is more fuel-efficient: 29 vs 22 MPG combined in its best version.
That works out to about $900 a year less in fuel for the Audi A4 (EPA estimate, 15,000 miles).
The Audi S7 is the bigger car, about 8 inches longer.
Across all model years since 2005, the Audi S7 has had fewer recall campaigns (14 vs 25).
The two cars
The 2025 Audi A4 is a compact car offered with a 2.0L 4-cyl turbo engine, including a hybrid version and all-wheel drive. It measures about 187 inches long and 73 inches wide on a 111-inch wheelbase, with a curb weight of roughly 3,633 lb (4dr Sedan Quattro).
The 2025 Audi S7 is a midsize car offered with a 2.9L 6-cyl engine, including a hybrid version and all-wheel drive. It measures about 196 inches long and 75 inches wide on a 115-inch wheelbase, with a curb weight of roughly 4,606 lb.
Buying used? The 2024 A4 and the 2024 S7 have the fewest problems in our data; avoid the 2020 A4 and the 2021 S7.
Basics
Efficiency
Performance & space
Safety & reliability
Interest
Green = clearly better. Prices are not included. How we calculate this →
Which one should you choose?
Choose the Audi A4 if…
- You want lower fuel bills (29 vs 22 MPG)
- You want something easier to park (8 in shorter)
Choose the Audi S7 if…
- You want more room (8 in longer)
- You put reliability history first (14 vs 25 recalls since 2005)
Pros & cons of each
2025 Audi A4
- Hybrid version availableOffered as a hybrid as well as gas.
- Lots of standard safety tech5 of 5 key driver aids standard on the versions we checked.
- No recalls so far
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
- Modest powerUp to 261 hp, versus about 362 hp for similar 2025 models.
2025 Audi S7
- Hybrid version availableOffered as a hybrid as well as gas.
- Below-average fuel economyBest version gets 22 MPG combined, 27% below the 2025 midsize car average of 30 MPG.
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Full 2025 Audi A4 specs →Full 2025 Audi S7 specs →Compare fuel costs for your driving →Compare size & garage fit →