1999 AC Ace vs. 1981 Audi UR
To start off, 1999 AC Ace is newer by 18 year(s). Which means there will be less support and parts availability for 1981 Audi UR. In addition, the cost of maintenance, including insurance, on 1981 Audi UR would be higher. At 3,506 cc (8 cylinders), 1999 AC Ace is equipped with a bigger engine. In terms of performance, 1999 AC Ace (351 HP @ 6500 RPM) has 154 more horse power than 1981 Audi UR. (197 HP @ 5500 RPM). In normal driving conditions, 1999 AC Ace should accelerate faster than 1981 Audi UR. With that said, vehicle weight also plays an important factor in acceleration. 1981 Audi UR weights approximately 225 kg more than 1999 AC Ace.
Because 1981 Audi UR is four wheel drive (4WD), it will have significant more traction and grip than 1999 AC Ace. In wet, icy, snow, or gravel driving conditions, 1981 Audi UR 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, 1999 AC Ace (400 Nm @ 4000 RPM) has 115 more torque (in Nm) than 1981 Audi UR. (285 Nm @ 3500 RPM). This means 1999 AC Ace will have an easier job in driving up hills or pulling heavy equipment than 1981 Audi UR.
Compare all specifications:
| 1999 AC Ace | 1981 Audi UR | |
| Make | AC | Audi |
| Model | Ace | UR |
| Year Released | 1999 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 3506 cc | 2144 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Horse Power | 351 HP | 197 HP |
| Engine RPM | 6500 RPM | 5500 RPM |
| Torque | 400 Nm | 285 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 83 mm | 79.5 mm |
| Engine Stroke Size | 81 mm | 86.4 mm |
| Engine Compression Ratio | 8.0:1 | 7.0:1 |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1025 kg | 1250 kg |
| Vehicle Length | 4430 mm | 4430 mm |
| Vehicle Width | 1880 mm | 1690 mm |
| Vehicle Height | 1310 mm | 1360 mm |
| Wheelbase Size | 2480 mm | 2530 mm |
| Fuel Tank Capacity | 90 L | 70 L |
