1973 BMW Touring vs. 2009 BMW 635
To start off, 2009 BMW 635 is newer by 36 year(s). Which means there will be less support and parts availability for 1973 BMW Touring. In addition, the cost of maintenance, including insurance, on 1973 BMW Touring would be higher. At 2,993 cc (6 cylinders), 2009 BMW 635 is equipped with a bigger engine. In terms of performance, 2009 BMW 635 (282 HP @ 4400 RPM) has 197 more horse power than 1973 BMW Touring. (85 HP @ 5700 RPM) In normal driving conditions, 2009 BMW 635 should accelerate faster than 1973 BMW Touring.
Let's talk about torque, 2009 BMW 635 (580 Nm @ 1750 RPM) has 450 more torque (in Nm) than 1973 BMW Touring. (130 Nm @ 3500 RPM). This means 2009 BMW 635 will have an easier job in driving up hills or pulling heavy equipment than 1973 BMW Touring.
Compare all specifications:
| 1973 BMW Touring | 2009 BMW 635 | |
| Make | BMW | BMW |
| Model | Touring | 635 |
| Year Released | 1973 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 1573 cc | 2993 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 85 HP | 282 HP |
| Engine RPM | 5700 RPM | 4400 RPM |
| Torque | 130 Nm | 580 Nm |
| Torque RPM | 3500 RPM | 1750 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 71 mm | 90 mm |
| Engine Compression Ratio | 8.6:1 | 17.0:1 |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Length | 4120 mm | 4830 mm |
| Vehicle Width | 1600 mm | 1860 mm |
| Vehicle Height | 1390 mm | 1380 mm |
| Wheelbase Size | 2510 mm | 2790 mm |
