2009 Cadillac XLR vs. 1991 Porsche 911
To start off, 2009 Cadillac XLR is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Porsche 911. In addition, the cost of maintenance, including insurance, on 1991 Porsche 911 would be higher. At 4,565 cc (8 cylinders), 2009 Cadillac XLR is equipped with a bigger engine. In terms of performance, 2009 Cadillac XLR (322 HP @ 6450 RPM) has 94 more horse power than 1991 Porsche 911. (228 HP @ 5900 RPM). In normal driving conditions, 2009 Cadillac XLR should accelerate faster than 1991 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac XLR weights approximately 547 kg more than 1991 Porsche 911. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2009 Cadillac XLR (423 Nm @ 4400 RPM) has 137 more torque (in Nm) than 1991 Porsche 911. (286 Nm @ 4800 RPM). This means 2009 Cadillac XLR will have an easier job in driving up hills or pulling heavy equipment than 1991 Porsche 911.
Compare all specifications:
| 2009 Cadillac XLR | 1991 Porsche 911 | |
| Make | Cadillac | Porsche |
| Model | XLR | 911 |
| Year Released | 2009 | 1991 |
| Body Type | Convertible | Roadster |
| Engine Position | Front | Rear |
| Engine Size | 4565 cc | 3163 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Horse Power | 322 HP | 228 HP |
| Engine RPM | 6450 RPM | 5900 RPM |
| Torque | 423 Nm | 286 Nm |
| Torque RPM | 4400 RPM | 4800 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1722 kg | 1175 kg |
| Vehicle Length | 4520 mm | 4300 mm |
| Vehicle Width | 1840 mm | 1660 mm |
| Vehicle Height | 1290 mm | 1260 mm |
