1999 AC Ace vs. 1991 Audi Coupe
To start off, 1999 AC Ace is newer by 8 year(s). Which means there will be less support and parts availability for 1991 Audi Coupe. In addition, the cost of maintenance, including insurance, on 1991 Audi Coupe 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 176 more horse power than 1991 Audi Coupe. (175 HP @ 5500 RPM). In normal driving conditions, 1999 AC Ace should accelerate faster than 1991 Audi Coupe. With that said, vehicle weight also plays an important factor in acceleration. 1991 Audi Coupe weights approximately 295 kg more than 1999 AC Ace.
Because 1991 Audi Coupe 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, 1991 Audi Coupe 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 151 more torque (in Nm) than 1991 Audi Coupe. (249 Nm @ 3000 RPM). This means 1999 AC Ace will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi Coupe.
Compare all specifications:
| 1999 AC Ace | 1991 Audi Coupe | |
| Make | AC | Audi |
| Model | Ace | Coupe |
| Year Released | 1999 | 1991 |
| Body Type | Roadster | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3506 cc | 2771 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 351 HP | 175 HP |
| Engine RPM | 6500 RPM | 5500 RPM |
| Torque | 400 Nm | 249 Nm |
| Torque RPM | 4000 RPM | 3000 RPM |
| Engine Bore Size | 83 mm | 82.5 mm |
| Engine Stroke Size | 81 mm | 86.4 mm |
| Engine Compression Ratio | 8.0:1 | 10.0:1 |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1025 kg | 1320 kg |
| Vehicle Length | 4430 mm | 4370 mm |
| Vehicle Width | 1880 mm | 1720 mm |
| Vehicle Height | 1310 mm | 1370 mm |
| Wheelbase Size | 2480 mm | 2560 mm |
