| Type | 2-door, 2-passenger convertible |
| Layout | Front engine/rear-wheel drive |
| Engine | 5.5-litre V8, DOHC, 32 valves |
| 6.2-litre V8, DOHC, 32 valves | |
| 5.5-litre V12, SOHC, 36 valves, | |
| turbocharged | |
| 6.0-litre V12, SOHC, 36 valves, | |
| turbocharged | |
| Horsepower | 382 @ 6000 rpm |
| 518 @ 6800 rpm | |
| 510 @ 5000 rpm | |
| 603 @ 4800 rpm | |
| Torque (lb-ft) | 391 @ 2800 rpm |
| 465 @ 5200 rpm | |
| 612 @ 1900 rpm | |
| 738 @ 2000 rpm | |
| Transmission | 7-speed automatic/5-speed automatic |
| Tires | P255/35R19 performance (front) |
| P285/30R19 performance (rear) | |
| Curb weight SL550 | 1915 kg (4221 lbs) |
| Curb weight SL63 AMG | 1995 kg (4398 lbs) |
| Curb weight SL600 | 2040 kg (4497 lbs) |
| Curb weight SL65 AMG | 2065 kg (4552 lbs) |
| Wheelbase | 2560 mm (100.1 in.) |
| Length | 4562 mm (179.6 in.) |
| Length AMG | 4605 mm (181.2 in.) |
| Width | 2069 mm (81.4 in.)(w/mirrors) |
| Width | SL65 AMG |
| Height | 1295 mm (50.9 in.)(top up) |
| Cargo capacity | 288 litres (10.1 cu. ft.) |
| Fuel consumption SL550 | City: 15.8 L/100 km (18 mpg Imp) |
| Hwy: 9.4 L/100 km (30 mpg Imp) | |
| Fuel consumption SL63 AMG | City: 17.9 L/100 km (16 mpg Imp) |
| Hwy: 10.6 L/100 km (27 mpg Imp) | |
| Fuel consumption SL600 | City: 18.5 L/100 km (15 mpg Imp) |
| Hwy: 11.4 L/100 km (25 mpg Imp) | |
| Fuel consumption SL65 AMG | City: 18.5 L/100 km (15 mpg Imp) |
| Hwy: 11.2 L/100 km (25 mpg Imp) | |
| Fuel type | Premium |
| Warranty | 4 yrs/80,000 km |
| Powertrain warranty | 4 yrs/80,000 km |
| Side airbags | Standard |
| Curtain airbags | N/A |
| Anti-lock brakes | Standard |
| Traction control | Standard |
| Stability control | Standard |
| Assembly location | Bremen, Germany |
| Afalterbach, Germany |

