2009 Alpina B3 vs. 1991 Rover 820
To start off, 2009 Alpina B3 is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Rover 820. In addition, the cost of maintenance, including insurance, on 1991 Rover 820 would be higher. At 3,301 cc (6 cylinders), 2009 Alpina B3 is equipped with a bigger engine. In terms of performance, 2009 Alpina B3 (276 HP @ 6200 RPM) has 96 more horse power than 1991 Rover 820. (180 HP @ 6000 RPM). In normal driving conditions, 2009 Alpina B3 should accelerate faster than 1991 Rover 820. With that said, vehicle weight also plays an important factor in acceleration. 2009 Alpina B3 weights approximately 117 kg more than 1991 Rover 820. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Alpina B3 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Rover 820. In wet, icy, snow, or gravel driving conditions, 2009 Alpina B3 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2009 Alpina B3 (335 Nm @ 4500 RPM) has 120 more torque (in Nm) than 1991 Rover 820. (215 Nm @ 2000 RPM). This means 2009 Alpina B3 will have an easier job in driving up hills or pulling heavy equipment than 1991 Rover 820.
Compare all specifications:
| 2009 Alpina B3 | 1991 Rover 820 | |
| Make | Alpina | Rover |
| Model | B3 | 820 |
| Year Released | 2009 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 3301 cc | 1994 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 276 HP | 180 HP |
| Engine RPM | 6200 RPM | 6000 RPM |
| Torque | 335 Nm | 215 Nm |
| Torque RPM | 4500 RPM | 2000 RPM |
| Engine Bore Size | 86.4 mm | 84.5 mm |
| Engine Stroke Size | 93.9 mm | 89 mm |
| Engine Compression Ratio | 10.0:1 | 8.5:1 |
| Top Speed | 251 km/hour | 217 km/hour |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1525 kg | 1408 kg |
| Vehicle Length | 4480 mm | 4890 mm |
| Vehicle Width | 1750 mm | 1740 mm |
| Vehicle Height | 1420 mm | 1400 mm |
| Wheelbase Size | 2730 mm | 2780 mm |
| Fuel Tank Capacity | 63 L | 68 L |
