Audi S3 vs Mercedes-Benz C-Class (2026)
Price gap, MSRP + destination
$2,395
- S3: 73 hp more, 1.6 s quicker to 60.
- C-Class: $2,395 cheaper, 3 mpg better.
- C-Class wins 6 of 10 measures.
| Measure | S3 | C-Class | Winner |
|---|---|---|---|
| MSRP + destination | $53,295 | $50,900 | C-Class |
| Horsepower | 328 hp | 255 hp | S3 |
| Torque | 295 lb-ft to 310 lb-ft | 295 lb-ft | N/A |
| MPG combined | 26 mpg | 29 mpg | C-Class |
| Cargo, max | 8.3 cu ft | 11.6 cu ft | C-Class |
| Cargo, seats up | 8.3 cu ft | 11.6 cu ft | C-Class |
| Rear legroom | 35.1 in | 36.0 in | C-Class |
| Front legroom | 41.2 in | 41.7 in | C-Class |
| Length | 177.4 in | 187.0 in | Not scored |
| Width | 71.5 in | 71.7 in to 74.4 in | N/A |
| Curb weight | 3,549 lb | 3,792 lb | Not scored |
| Seats | 5 | 5 | About the same |
| 0-60 mph | 4.4 s tested | 6.0 s tested | S3 |
| 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 |
|---|---|---|
| S3 Base Style AWD $52,000 | C-Class C 300 4MATIC AWD $51,650 | $350 |
| C-Class C 300 RWD $49,650 | S3 Base Style AWD $52,000 | $2,350 |
Cost to run
C-Class costs $3,312 less over 6 years.
12,000 miles a year. Gas $3.20. Electricity 17 cents per kWh.
| Cost | S3 | C-Class |
|---|---|---|
| MSRP + destination | $53,295 | $50,900 |
| Fuel or charging, 1 year | $1,477 | $1,324 |
| Fuel or charging, 6 years | $8,862 | $7,945 |
| Total, 6 years | $62,157 | $58,845 |
Which is better for me?
Weight each group from 0 to 10. MPG uses fuel or charging cost.
Equal weights: C-Class wins.
S3 wins if Space weight is 1 or less.
| Group | Ahead | By |
|---|---|---|
| Price | C-Class | 4% |
| MPG | C-Class | 10% |
| Power | S3 | 22% |
| Space | C-Class | 28% |
| 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