1991 Mazda 121 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 Mazda 121. In addition, the cost of maintenance, including insurance, on 1991 Mazda 121 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 82 more horse power than 1991 Mazda 121. (71 HP @ 6000 RPM) In normal driving conditions, 2007 Mercury Mariner should accelerate faster than 1991 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 2007 Mercury Mariner weights approximately 1025 kg more than 1991 Mazda 121. 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 102 more torque (in Nm) than 1991 Mazda 121. (104 Nm @ 3700 RPM). This means 2007 Mercury Mariner will have an easier job in driving up hills or pulling heavy equipment than 1991 Mazda 121. 2007 Mercury Mariner has automatic transmission and 1991 Mazda 121 has manual transmission. 1991 Mazda 121 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 Mazda 121 | 2007 Mercury Mariner | |
| Make | Mazda | Mercury |
| Model | 121 | Mariner |
| Year Released | 1991 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 1323 cc | 2299 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 71 HP | 153 HP |
| Engine RPM | 6000 RPM | 5800 RPM |
| Torque | 104 Nm | 206 Nm |
| Torque RPM | 3700 RPM | 4250 RPM |
| Engine Bore Size | 71 mm | 87.4 mm |
| Engine Stroke Size | 83.6 mm | 94 mm |
| Engine Compression Ratio | 9.4:1 | 9.7:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 900 kg | 1925 kg |
| Vehicle Length | 3820 mm | 4430 mm |
| Vehicle Width | 1660 mm | 1790 mm |
| Vehicle Height | 1480 mm | 1730 mm |
| Wheelbase Size | 2400 mm | 2630 mm |
| Fuel Tank Capacity | 43 L | 62 L |
