Comparison Alpina B3 Coupe (E46) 3.3 i 24V B3S (305 Hp) & Vauxhall Astra Mk VI Sports Tourer 1.4 VVT (100 Hp)
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| Brand: | Alpina | Vauxhall |
| Model: | B3 | Astra |
| Generation: | B3 Coupe (E46) | Astra Mk VI Sports Tourer |
| Engine / modification: | 3.3 i 24V B3S (305 Hp) | 1.4 VVT (100 Hp) |
| Production start: | 2003 year | 2010 year |
| Production end: | 2006 year | 2015 year |
| Coupe type: | Coupe | Combi |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 16.2 l/100 km | 7.6 l/100 km |
| Fuel consumption / economy - extra urban: | 7.9 l/100 km | 4.9 l/100 km |
| Fuel consumption / economy - combined: | 10.9 l/100 km | 5.9 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.33 | |
| Fuel tank volume: | 63 l | 56 l |
| CO2 emissions: | 139 g/km | |
| Power: | 305 hp | 100 hp |
| Max power in: | 6300 rpm. | 6000 rpm. |
| Maximum speed: | 271 km/h | 175 km/h |
| Acceleration from 0 to 100 km/h: | 5.4 sec | 14.5 sec |
| Torque: | 362 Nm @ 4800 rpm. | 200 Nm/1850-4900 rpm. |
| Model Engine: | A14XER | |
| Engine position: | Front, longitudinal | Front, transverse |
| Engine displacement: | 3346 cm3 | 1398 cm3 |
| Fuel System: | Multi-point injection | Direct injection |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | DOHC | DOHC |
| Number of cylinders: | 6 | 4 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10.2 | 10.5 |
| Piston Stroke: | 93.8 mm | 82.6 mm |
| Cylinder Bore: | 87 mm | 73.4 mm |
| Wheel Drive: | Rear wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 5 | |
| Number of Gears (manual transmission): | 6 | 5 |
| Length: | 4488 mm | 4698 mm |
| Width: | 1757 mm | 1814 mm |
| Width including mirrors: | 2013 mm | |
| Height: | 1367 mm | 1535 mm |
| Wheelbase: | 2725 mm | 2685 mm |
| Front track: | 1471 mm | 1544 mm |
| Rear (Back) track: | 1472 mm | 1558 mm |
| Ride height(clearance): | 117 mm | |
| Minimum volume of Luggage (trunk): | 410 l | 550 l |
| Maximum amount of Luggage (trunk): | 1550 l | |
| Front suspension: | Wishbone | |
| Rear suspension: | Helical spring | |
| Max weight: | 2040 kg | 1960 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc |
| Kerb Weight: | 1620 kg | 1393 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | |
| Tire size: | 225/40 ZR18; 255/35 ZR18 | 215/50 R17 |
| Wheel rims size: | 8J x 18; 9J X 18 | R17 |