Comparison Mercedes-Benz R-class (W251) Long R 350 V6 (272 Hp) 4MATIC G-TRONIC & Mercedes-Benz SLK (R171) SLK 350 V6 (272 Hp) 7G-TRONIC & Mercedes-Benz CLA Shooting Brake (X117 facelift 2016) CLA 250 (211 Hp)
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| Brand: | Mercedes-Benz | Mercedes-Benz | Mercedes-Benz |
| Model: | R-class | SLK | CLA |
| Generation: | R-class (W251) Long | SLK (R171) | CLA Shooting Brake (X117 facelift 2016) |
| Engine / modification: | R 350 V6 (272 Hp) 4MATIC G-TRONIC | SLK 350 V6 (272 Hp) 7G-TRONIC | CLA 250 (211 Hp) |
| Production start: | 2006 year | 2004 year | 2016 year |
| Production end: | 2010 year | 2007 year | |
| Coupe type: | Combi | Roadster | Combi |
| Num. of Doors: | 5 | 2 | 5 |
| Num. of seats: | 5 | 2 | 5 |
| Fuel consumption / economy - urban: | 8.8-8.7 l/100 km | ||
| Fuel consumption / economy - extra urban: | 5.4-5.2 l/100 km | ||
| Fuel consumption / economy - combined: | 11.7 l/100 km | 6.7-6.6 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | 0.30 | |
| Fuel tank volume: | 80 l | 70 l | 50 l |
| Emission standard: | EURO V | Euro 4 | EURO VI |
| CO2 emissions: | 274 g/km | 156-151 g/km | |
| Power: | 272 hp | 272 hp | 211 hp |
| Max power in: | 6000 rpm. | 6000 rpm. | 5500 rpm. |
| Maximum speed: | 230 km/h | 250 , Electronically limited km/h | 240 km/h |
| Acceleration from 0 to 100 km/h: | 8.4 sec | 5.5 sec | 6.8 sec |
| Torque: | 350 Nm @ 2400-5000 rpm. | 350 Nm @ 2400-5000 rpm. | 350 Nm/1200-4000 rpm. |
| Model Engine: | M 272.963 | ||
| Engine position: | Front, longitudinal | Front, longitudinal | Front, transverse |
| Engine displacement: | 3498 cm3 | 3498 cm3 | 1991 cm3 |
| Engine oil capacity: | 8 l | ||
| Coolant: | 10.2 l | ||
| Fuel System: | Multi-point injection | Direct injection | |
| Aspiration / Turbine: | Turbocharging | ||
| Position of cylinders: | V engine | Inline | |
| Valvetrain: | DOHC | ||
| Number of cylinders: | 6 | 6 | 4 |
| Number of valves per cylinder: | 4 | 4 | |
| Compression ratio: | 10.7 | 10.7 | 9.8 |
| Piston Stroke: | 86 mm | 86 mm | |
| Cylinder Bore: | 92.9 mm | 92.9 mm | |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 7 | 7 | |
| Number of Gears (manual transmission): | 6 | ||
| Length: | 5157 mm | 4089 mm | 4640 mm |
| Width: | 1922 mm | 1788 mm | 1777 mm |
| Width including mirrors: | 1970 mm | 2032 mm | |
| Height: | 1674 mm | 1298 mm | 1435 mm |
| Wheelbase: | 3215 mm | 2430 mm | 2699 mm |
| Front track: | 1661 mm | 1526 mm | 1549 mm |
| Rear (Back) track: | 1651 mm | 1549 mm | 1547 mm |
| Minimum volume of Luggage (trunk): | 208 l | 495 l | |
| Maximum amount of Luggage (trunk): | 3215 l | ||
| Front suspension: | Double wishbone | McPherson | |
| Rear suspension: | Independent, spring multi-link with stabilizer | Multi-link independent | |
| Max weight: | 2880 kg | 1780 kg | 1995 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Disc | Disc |
| Kerb Weight: | 2230 kg | 1390 kg | 1395 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Hydraulic Steering | Electric Steering |
| Max. roof load: | 100 kg | 50 kg | 100 kg |
| Minimum turning circle (turning diameter): | 12.4 m | 10.51 m | 11 m |
| Permitted trailer load with brakes (12%): | 2100 kg | 1500 kg | |
| Permitted trailer load without brakes: | 750 kg | 735 kg | |
| Tire size: | 235/65 R17 | Front wheel tires: 225/45 R 17 91 W | 225/45 R17 |
| Wheel rims size: | R17 | Front wheel rims: 7.5 J x 17 H 2 | R17 |