Audi S6 vs BMW M3 (2025)
Price gap, MSRP
$100
- S6: 3 mpg better, 1.8 in more rear legroom.
- M3: 29 hp more, 3.2 cu ft more cargo.
- M3 wins 4 of 11 measures.
- Price: about the same.
| Measure | S6 | M3 | Winner |
|---|---|---|---|
| MSRP | $75,900 | $76,000 | About the same |
| Horsepower | 444 hp | 473 hp | M3 |
| Torque | 442 lb-ft | 406 lb-ft | S6 |
| MPG combined | 22 mpg | 19 mpg | S6 |
| Cargo, max | 13.7 cu ft | 16.9 cu ft | M3 |
| Cargo, seats up | 13.7 cu ft | 16.9 cu ft | M3 |
| Rear legroom | 37.4 in | 35.6 in | S6 |
| Front legroom | 41.3 in | 41.6 in | About the same |
| Length | 195.0 in | 189.1 in | Not scored |
| Width | 74.3 in | 74.3 in | Not scored |
| Curb weight | 4,486 lb | 3,840 lb | Not scored |
| Seats | 5 | 5 | About the same |
| Ground clearance | N/A | 4.7 in | N/A |
| 0-60 mph | 4.4 s tested | 3.2 s published | M3 |
| Basic warranty | 4 yr / 50,000 mi | 4 yr / 50,000 mi | About the same |
Not scored: length, width, curb weight. N/A rows are not counted.
Nearest trims by price
| Trim | Nearest in price | Gap |
|---|---|---|
| S6 Premium AWD $75,900 | M3 Sedan RWD $76,000 | $100 |
| M3 Sedan RWD $76,000 | S6 Premium AWD $75,900 | $100 |
Cost to run
About the same over 6 years.
12,000 miles a year. Gas $3.20. Electricity 17 cents per kWh.
| Cost | S6 | M3 |
|---|---|---|
| MSRP | $75,900 | $76,000 |
| Fuel or charging, 1 year | $1,745 | $2,021 |
| Fuel or charging, 6 years | $10,473 | $12,126 |
| Total, 6 years | $86,373 | $88,126 |
Which is better for me?
Weight each group from 0 to 10. MPG uses fuel or charging cost.
Equal weights: M3 wins.
S6 wins if Space weight is 1 or less.
| Group | Ahead | By |
|---|---|---|
| Price | About the same | |
| MPG | S6 | 14% |
| Power | M3 | 6% |
| Space | M3 | 19% |
| Towing | N/A |
Other years
What this cannot tell you
Your price and mpg will differ.
Reliability and safety are not included.
- 2 or more sources
- 1 source
- Model-level, rule or estimate
- Sources disagree