I'll take the S4.
Audi S5 Coupe vs Audi S4
| Category | Audi S5 Coupe | Audi S4 (B8) |
|---|---|---|
| Engine layout | 3.0 l V6 | 3.0 l V6 |
| Max power (ps / bhp) | 333 / 328 | 333 / 329 |
| Max torque (Nm / lb-ft) | 440 / 325 | 440 / 325 |
| Curb weight (kg / lb) | 1675 / 3693 | 1736 / 3827 |
| Power / tonne (ps / bhp) | 199 / 196 | 192 / 189 |
Performance
| Category | Audi S5 Coupe | Audi S4 (B8) |
|---|---|---|
| 0 - 100 kph | 4.7 s | 4.7 s |
| 0 - 200 kph | 18.4 s | 17.5 s |
| Est. 100 - 200 kph | 13.7 s | 12.8 s |
| 0 - 60 mph | 4.6 s | 4.4 s |
| 0 - 100 mph | 11.5 s | 11.0 s |
| Est. 1/8 mile | 9.1 s @ 93.2 mph | 9.1 s @ 93.8 mph |
| 1/4 mile | 13.2 s @ 107.5 mph | 13.0 s @ 105.6 mph |
| Top speed | 250 kph (155 mph) | 250 kph (155 mph) |
| Est. max acceleration | 0.66 g (6 m/s²) | 0.66 g (6 m/s²) |
Summary
| Category | Audi S5 Coupe | Audi S4 (B8) |
|---|---|---|
| Track Performance | 0 | 0 |
| Straight line speed | 92 | 100 |
| Overall | 92 | 100 |
Verdict
S4 is the fastest by considerable margin.
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Acceleration graph
