1999 Audi A4 vs. 2013 BMW 6 series
To start off, 2013 BMW 6 series is newer by 14 year(s). Which means there will be less support and parts availability for 1999 Audi A4. In addition, the cost of maintenance, including insurance, on 1999 Audi A4 would be higher. At 4,395 cc (8 cylinders), 2013 BMW 6 series is equipped with a bigger engine. In terms of performance, 2013 BMW 6 series (437 HP @ 5500 RPM) has 175 more horse power than 1999 Audi A4. (262 HP @ 5800 RPM) In normal driving conditions, 2013 BMW 6 series should accelerate faster than 1999 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW 6 series weights approximately 689 kg more than 1999 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2013 BMW 6 series (649 Nm @ 4500 RPM) has 249 more torque (in Nm) than 1999 Audi A4. (400 Nm @ 3600 RPM). This means 2013 BMW 6 series will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A4. 2013 BMW 6 series has automatic transmission and 1999 Audi A4 has manual transmission. 1999 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2013 BMW 6 series will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 Audi A4 | 2013 BMW 6 series | |
| Make | Audi | BMW |
| Model | A4 | 6 series |
| Year Released | 1999 | 2013 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 4395 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 262 HP | 437 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 400 Nm | 649 Nm |
| Torque RPM | 3600 RPM | 4500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | AWD |
| Transmission Type | Manual | 8-speed automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1400 kg | 2089 kg |
| Vehicle Length | 4480 mm | 5009 mm |
| Vehicle Width | 1740 mm | 2081 mm |
| Vehicle Height | 1420 mm | 1392 mm |
| Wheelbase Size | 2620 mm | 2968 mm |
| Fuel Tank Capacity | 60 L | 70 L |
