2007 BMW 525 vs. 1991 Ford Thunderbird
To start off, 2007 BMW 525 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 4,942 cc (8 cylinders), 1991 Ford Thunderbird is equipped with a bigger engine. In terms of performance, 2007 BMW 525 (215 HP @ 6500 RPM) has 18 more horse power than 1991 Ford Thunderbird. (197 HP @ 4000 RPM). In normal driving conditions, 2007 BMW 525 should accelerate faster than 1991 Ford Thunderbird. With that said, vehicle weight also plays an important factor in acceleration. 1991 Ford Thunderbird weights approximately 187 kg more than 2007 BMW 525.
Because 2007 BMW 525 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 BMW 525 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 Ford Thunderbird (373 Nm @ 3000 RPM) has 123 more torque (in Nm) than 2007 BMW 525. (250 Nm @ 2750 RPM). This means 1991 Ford Thunderbird will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 525.
Compare all specifications:
| 2007 BMW 525 | 1991 Ford Thunderbird | |
| Make | BMW | Ford |
| Model | 525 | Thunderbird |
| Year Released | 2007 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 4942 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 215 HP | 197 HP |
| Engine RPM | 6500 RPM | 4000 RPM |
| Torque | 250 Nm | 373 Nm |
| Torque RPM | 2750 RPM | 3000 RPM |
| Engine Bore Size | 78.8 mm | 101.6 mm |
| Engine Stroke Size | 82 mm | 76.2 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 | 1565 kg | 1752 kg |
| Vehicle Length | 4850 mm | 5050 mm |
| Vehicle Width | 1850 mm | 1850 mm |
| Vehicle Height | 1470 mm | 1350 mm |
| Wheelbase Size | 2890 mm | 2880 mm |
| Fuel Tank Capacity | 70 L | 65 L |
