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Mercedes-Benz SL 55 AMG vs Audi R8 4.2 FSI Quattro
| Category | SL 55 AMG | R8 4.2 FSI Quattro |
|---|---|---|
| Engine layout | 5.4 l V8 | 4.2 l V8 |
| Max power (ps / bhp) | 517 / 510 | 420 / 414 |
| Max torque (Nm / lb-ft) | 720 / 531 | 430 / 317 |
| Curb weight (kg / lb) | 1985 / 4376 | 1604 / 3536 |
| Power / tonne (ps / bhp) | 260 / 257 | 262 / 258 |
| Average price | €143,000 | €116,000 |
Lap Times
Acceleration
| Speed & distance | SL 55 AMG | R8 4.2 FSI Quattro |
|---|---|---|
| 0 - 50 kph | 1.8 s | 1.8 s |
| 0 - 100 kph | 4.3 s | 4.3 s |
| 0 - 130 kph | 6.4 s | 7.2 s |
| 0 - 160 kph | 8.9 s | 10.5 s |
| 0 - 200 kph | 13.0 s | 14.9 s |
| Est. 100 - 200 kph | 8.9 s | 11.6 s |
| 0 - 100 mph | 9.0 s | 9.9 s |
| Est. 1/8 mile | 8.6 s @ 100.0 mph | 9.0 s @ 95.1 mph |
| 1/4 mile | 12.3 s | 12.5 s |
General performance
| Category | SL 55 AMG | R8 4.2 FSI Quattro |
|---|---|---|
| Top speed | 250 kph (155 mph) | 301 kph (187 mph) |
| Est. 0 - 100 mph - 0 | 15.5 s @ 1263 ft | 13.9 s @ 994 ft |
| Est. max acceleration | 0.71 g (7 m/s²) | 0.67 g (7 m/s²) |
| Fuel economy | 14.9 l/100 km (16 mpg US / 19 UK) | 10.8 l/100 km (22 mpg US / 26 UK) |
| 100 kph - 0 | 36 m (120 ft) | 34 m (112 ft) |
| 200 kph - 0 | 152 m (498 ft) | 141 m (463 ft) |
Summary
| Category | SL 55 AMG | R8 4.2 FSI Quattro |
|---|---|---|
| Track Performance | 88 | 100 |
| Straight line speed | 100 | 91 |
| Overall | 96 | 100 |
Verdict
R8 4.2 FSI Quattro is the fastest by a small margin.
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Acceleration graph
