1991 BMW 325 vs. 2007 Mercury Mariner
To start off, 2007 Mercury Mariner is newer by 16 year(s). Which means there will be less support and parts availability for 1991 BMW 325. In addition, the cost of maintenance, including insurance, on 1991 BMW 325 would be higher. At 2,443 cc (6 cylinders), 1991 BMW 325 is equipped with a bigger engine. In terms of performance, 2007 Mercury Mariner (133 HP @ 6000 RPM) has 20 more horse power than 1991 BMW 325. (113 HP @ 4800 RPM) In normal driving conditions, 2007 Mercury Mariner should accelerate faster than 1991 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2007 Mercury Mariner weights approximately 491 kg more than 1991 BMW 325. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Mercury Mariner is four wheel drive (4WD), it will have significant more traction and grip than 1991 BMW 325. In wet, icy, snow, or gravel driving conditions, 2007 Mercury Mariner 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, 1991 BMW 325 (220 Nm @ 1900 RPM) has 52 more torque (in Nm) than 2007 Mercury Mariner. (168 Nm @ 4250 RPM). This means 1991 BMW 325 will have an easier job in driving up hills or pulling heavy equipment than 2007 Mercury Mariner. 2007 Mercury Mariner has automatic transmission and 1991 BMW 325 has manual transmission. 1991 BMW 325 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:
| 1991 BMW 325 | 2007 Mercury Mariner | |
| Make | BMW | Mercury |
| Model | 325 | Mariner |
| Year Released | 1991 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2443 cc | 2299 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 113 HP | 133 HP |
| Engine RPM | 4800 RPM | 6000 RPM |
| Torque | 220 Nm | 168 Nm |
| Torque RPM | 1900 RPM | 4250 RPM |
| Engine Bore Size | 80 mm | 87.5 mm |
| Engine Stroke Size | 81 mm | 94 mm |
| Fuel Type | Diesel | Gasoline / Electric Hybrid |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1434 kg | 1925 kg |
| Vehicle Length | 4440 mm | 4430 mm |
| Vehicle Width | 1710 mm | 1790 mm |
| Vehicle Height | 1400 mm | 1790 mm |
| Wheelbase Size | 2710 mm | 2630 mm |
| Fuel Tank Capacity | 70 L | 57 L |
