Comparison Acura RDX I 2.3 (240 Hp) AWD Automatic & Alpina B3 (E46) 3.3 i 24V Switchtronic Allrad (280 Hp)
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| Brand: | Acura | Alpina |
| Model: | RDX | B3 |
| Generation: | RDX I | B3 (E46) |
| Engine / modification: | 2.3 (240 Hp) AWD Automatic | 3.3 i 24V Switchtronic Allrad (280 Hp) |
| Production start: | 2007 year | 2001 year |
| Production end: | 2009 year | 2005 year |
| Coupe type: | SUV | Sedan |
| Num. of Doors: | 5 | 4 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 12.38 l/100 km | 17.1 l/100 km |
| Fuel consumption / economy - extra urban: | 10.22 l/100 km | 8.4 l/100 km |
| Fuel consumption / economy - combined: | 11.6 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 68 l | 63 l |
| Power: | 240 hp | 280 hp |
| Max power in: | 6000 rpm. | 6200 rpm. |
| Maximum speed: | 256 km/h | |
| Acceleration from 0 to 100 km/h: | 6.9 sec | |
| Torque: | 353 Nm @ 4500 rpm. | 335 Nm @ 4500 rpm. |
| Model Engine: | K23A1 | |
| Engine position: | Front, transverse | Front, longitudinal |
| Engine displacement: | 2300 cm3 | 3300 cm3 |
| Engine oil capacity: | 4.7 l | |
| Coolant: | 8.0 l | |
| Fuel System: | Multi-point injection | Multi-point injection |
| Aspiration / Turbine: | Turbocharging | |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | DOHC, i-VTEC | DOHC |
| Number of cylinders: | 4 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 8.8 | 10.2 |
| Piston Stroke: | 99 mm | 93.8 mm |
| Cylinder Bore: | 86 mm | 86.4 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 5 | 5 |
| Length: | 4590 mm | 4471 mm |
| Width: | 1869 mm | 1739 mm |
| Height: | 1656 mm | 1414 mm |
| Wheelbase: | 2650 mm | 2725 mm |
| Front track: | 1572 mm | 1471 mm |
| Rear (Back) track: | 1590 mm | 1481 mm |
| Minimum volume of Luggage (trunk): | 440 l | |
| Front suspension: | The depreciated rack | Wishbone |
| Rear suspension: | Helical spring | Helical spring |
| Max weight: | 2060 kg | |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs |
| Kerb Weight: | 1780 kg | 1560 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | |
| Minimum turning circle (turning diameter): | 11.9 m | |
| Tire size: | 235/55 R18 | 225/40 ZR18; 255/35 ZR18 |
| Wheel rims size: | 7.5J X 18 | 8J X 18; 9J X 18 |