1955 DKW F 91 vs. 1978 Mazda RX-7
To start off, 1978 Mazda RX-7 is newer by 23 year(s). Which means there will be less support and parts availability for 1955 DKW F 91. In addition, the cost of maintenance, including insurance, on 1955 DKW F 91 would be higher. At 2,292 cc, 1978 Mazda RX-7 is equipped with a bigger engine. In terms of performance, 1978 Mazda RX-7 (105 HP @ 6000 RPM) has 67 more horse power than 1955 DKW F 91. (38 HP @ 4200 RPM) In normal driving conditions, 1978 Mazda RX-7 should accelerate faster than 1955 DKW F 91. With that said, vehicle weight also plays an important factor in acceleration. 1978 Mazda RX-7 weights approximately 190 kg more than 1955 DKW F 91. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1978 Mazda RX-7 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1978 Mazda RX-7. However, in wet, icy, snow, or gravel driving conditions, 1955 DKW F 91, being front wheel drive (FWD), will offer much better control with better grip. 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, 1978 Mazda RX-7 (145 Nm) has 66 more torque (in Nm) than 1955 DKW F 91. (79 Nm). This means 1978 Mazda RX-7 will have an easier job in driving up hills or pulling heavy equipment than 1955 DKW F 91.
Compare all specifications:
| 1955 DKW F 91 | 1978 Mazda RX-7 | |
| Make | DKW | Mazda |
| Model | F 91 | RX-7 |
| Year Released | 1955 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 895 cc | 2292 cc |
| Engine Type | in-line | dual-disk rotary |
| Horse Power | 38 HP | 105 HP |
| Engine RPM | 4200 RPM | 6000 RPM |
| Torque | 79 Nm | 145 Nm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 870 kg | 1060 kg |
| Vehicle Length | 4230 mm | 4290 mm |
| Vehicle Width | 1600 mm | 1680 mm |
| Vehicle Height | 1460 mm | 1280 mm |
| Wheelbase Size | 2360 mm | 2430 mm |
