2007 Buick LaCrosse vs. 1991 Ford Sierra
To start off, 2007 Buick LaCrosse is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1991 Ford Sierra would be higher. At 3,791 cc (6 cylinders), 2007 Buick LaCrosse is equipped with a bigger engine. In terms of performance, 2007 Buick LaCrosse (200 HP) has 126 more horse power than 1991 Ford Sierra. (74 HP). In normal driving conditions, 2007 Buick LaCrosse should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2007 Buick LaCrosse weights approximately 935 kg more than 1991 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1991 Ford Sierra is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1991 Ford Sierra. However, in wet, icy, snow, or gravel driving conditions, 2007 Buick LaCrosse, being front wheel drive (FWD), will offer much better control with better grip. 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 Buick LaCrosse (312 Nm @ 4000 RPM) has 189 more torque (in Nm) than 1991 Ford Sierra. (123 Nm @ 2900 RPM). This means 2007 Buick LaCrosse will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra. 2007 Buick LaCrosse has automatic transmission and 1991 Ford Sierra has manual transmission. 1991 Ford Sierra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Buick LaCrosse will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Buick LaCrosse | 1991 Ford Sierra | |
| Make | Buick | Ford |
| Model | LaCrosse | Sierra |
| Year Released | 2007 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 3791 cc | 1597 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 200 HP | 74 HP |
| Torque | 312 Nm | 123 Nm |
| Torque RPM | 4000 RPM | 2900 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1950 kg | 1015 kg |
| Vehicle Length | 5040 mm | 4430 mm |
| Vehicle Width | 1860 mm | 1700 mm |
| Vehicle Height | 1460 mm | 1370 mm |
| Wheelbase Size | 2810 mm | 2620 mm |
