2008 Cadillac STS vs. 1991 Mazda 121
To start off, 2008 Cadillac STS is newer by 17 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 4,565 cc (8 cylinders), 2008 Cadillac STS is equipped with a bigger engine. In terms of performance, 2008 Cadillac STS (320 HP @ 6400 RPM) has 249 more horse power than 1991 Mazda 121. (71 HP @ 6000 RPM). In normal driving conditions, 2008 Cadillac STS should accelerate faster than 1991 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 2008 Cadillac STS weights approximately 735 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.
Because 2008 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 1991 Mazda 121. In wet, icy, snow, or gravel driving conditions, 2008 Cadillac STS 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, 2008 Cadillac STS (427 Nm @ 4400 RPM) has 323 more torque (in Nm) than 1991 Mazda 121. (104 Nm @ 3700 RPM). This means 2008 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1991 Mazda 121. 2008 Cadillac STS 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. 2008 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Cadillac STS | 1991 Mazda 121 | |
| Make | Cadillac | Mazda |
| Model | STS | 121 |
| Year Released | 2008 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 1323 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 320 HP | 71 HP |
| Engine RPM | 6400 RPM | 6000 RPM |
| Torque | 427 Nm | 104 Nm |
| Torque RPM | 4400 RPM | 3700 RPM |
| Engine Compression Ratio | 10.5:1 | 9.4:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1635 kg | 900 kg |
| Vehicle Length | 5000 mm | 3820 mm |
| Vehicle Width | 1850 mm | 1660 mm |
| Vehicle Height | 1470 mm | 1480 mm |
| Wheelbase Size | 2960 mm | 2400 mm |
| Fuel Tank Capacity | 64 L | 43 L |
