2007 Mercury Mariner vs. 1991 Rover 400
To start off, 2007 Mercury Mariner is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Rover 400. In addition, the cost of maintenance, including insurance, on 1991 Rover 400 would be higher. At 2,299 cc (4 cylinders), 2007 Mercury Mariner is equipped with a bigger engine. In terms of performance, 2007 Mercury Mariner (153 HP @ 5800 RPM) has 59 more horse power than 1991 Rover 400. (94 HP @ 6250 RPM). In normal driving conditions, 2007 Mercury Mariner should accelerate faster than 1991 Rover 400. With that said, vehicle weight also plays an important factor in acceleration. 2007 Mercury Mariner weights approximately 905 kg more than 1991 Rover 400. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear 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, 2007 Mercury Mariner (206 Nm @ 4250 RPM) has 82 more torque (in Nm) than 1991 Rover 400. (124 Nm @ 4000 RPM). This means 2007 Mercury Mariner will have an easier job in driving up hills or pulling heavy equipment than 1991 Rover 400. 2007 Mercury Mariner has automatic transmission and 1991 Rover 400 has manual transmission. 1991 Rover 400 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Mercury Mariner will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Mercury Mariner | 1991 Rover 400 | |
| Make | Mercury | Rover |
| Model | Mariner | 400 |
| Year Released | 2007 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 2299 cc | 1395 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 153 HP | 94 HP |
| Engine RPM | 5800 RPM | 6250 RPM |
| Torque | 206 Nm | 124 Nm |
| Torque RPM | 4250 RPM | 4000 RPM |
| Engine Bore Size | 87.4 mm | 75 mm |
| Engine Stroke Size | 94 mm | 79 mm |
| Engine Compression Ratio | 9.7:1 | 9.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1925 kg | 1020 kg |
| Vehicle Length | 4430 mm | 4370 mm |
| Vehicle Width | 1790 mm | 1690 mm |
| Vehicle Height | 1730 mm | 1410 mm |
| Wheelbase Size | 2630 mm | 2560 mm |
