2007 Cadillac STS vs. 1991 Ford Thunderbird
To start off, 2007 Cadillac STS is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Ford Thunderbird. In addition, the cost of maintenance, including insurance, on 1991 Ford Thunderbird would be higher. At 4,565 cc (8 cylinders), 2007 Cadillac STS is equipped with a bigger engine. In terms of performance, 2007 Cadillac STS (322 HP @ 6400 RPM) has 184 more horse power than 1991 Ford Thunderbird. (138 HP @ 3800 RPM). In normal driving conditions, 2007 Cadillac STS should accelerate faster than 1991 Ford Thunderbird. With that said, vehicle weight also plays an important factor in acceleration. 2007 Cadillac STS weights approximately 210 kg more than 1991 Ford Thunderbird. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 1991 Ford Thunderbird. In wet, icy, snow, or gravel driving conditions, 2007 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, 2007 Cadillac STS (427 Nm @ 4400 RPM) has 136 more torque (in Nm) than 1991 Ford Thunderbird. (291 Nm @ 2400 RPM). This means 2007 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Thunderbird.
Compare all specifications:
| 2007 Cadillac STS | 1991 Ford Thunderbird | |
| Make | Cadillac | Ford |
| Model | STS | Thunderbird |
| Year Released | 2007 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 3791 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 322 HP | 138 HP |
| Engine RPM | 6400 RPM | 3800 RPM |
| Torque | 427 Nm | 291 Nm |
| Torque RPM | 4400 RPM | 2400 RPM |
| Engine Bore Size | 93 mm | 96.9 mm |
| Engine Stroke Size | 84 mm | 86 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1820 kg | 1610 kg |
| Vehicle Length | 4990 mm | 5050 mm |
| Vehicle Width | 1850 mm | 1850 mm |
| Vehicle Height | 1470 mm | 1350 mm |
| Wheelbase Size | 2960 mm | 2880 mm |
| Fuel Tank Capacity | 66 L | 45 L |
