2004 BMW Z4 vs. 1969 Riley 4
To start off, 2004 BMW Z4 is newer by 35 year(s). Which means there will be less support and parts availability for 1969 Riley 4. In addition, the cost of maintenance, including insurance, on 1969 Riley 4 would be higher. At 2,494 cc (6 cylinders), 2004 BMW Z4 is equipped with a bigger engine. In terms of performance, 2004 BMW Z4 (185 HP) has 118 more horse power than 1969 Riley 4. (67 HP). In normal driving conditions, 2004 BMW Z4 should accelerate faster than 1969 Riley 4. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW Z4 weights approximately 148 kg more than 1969 Riley 4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2004 BMW Z4 (245 Nm @ 3500 RPM) has 124 more torque (in Nm) than 1969 Riley 4. (121 Nm @ 2500 RPM). This means 2004 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1969 Riley 4.
Compare all specifications:
| 2004 BMW Z4 | 1969 Riley 4 | |
| Make | BMW | Riley |
| Model | Z4 | 4 |
| Year Released | 2004 | 1969 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 1622 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 185 HP | 67 HP |
| Torque | 245 Nm | 121 Nm |
| Torque RPM | 3500 RPM | 2500 RPM |
| Engine Bore Size | 84 mm | 76.2 mm |
| Engine Stroke Size | 75 mm | 88.9 mm |
| Engine Compression Ratio | 11.0:1 | 8.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1296 kg | 1148 kg |
| Vehicle Length | 4100 mm | 4540 mm |
| Vehicle Width | 1790 mm | 1620 mm |
| Vehicle Height | 1300 mm | 1530 mm |
| Wheelbase Size | 2500 mm | 2530 mm |
| Fuel Tank Capacity | 55 L | 45 L |
