vs
vs
Audi A8 L W12 (2014)
BMW M6 Convertible (2015)
BMW Z4 Roadster sDrive20i (2014)
Top 7%4,567 points
Top 7%
Top 4%4,753 points
Top 4%
Top 30%3,445 points
Top 30%
Top specs, facts and figures

Audi A8 L W12 (2014) vs BMW M6 Convertible (2015) vs BMW Z4 Roadster sDrive20i (2014): 38 facts in comparison

1. Has a rear-view camera

A rear-view camera (also known as a back-up camera) provides a view of behind the vehicle, helping to prevent accidents. It is particularly useful in vehicles with large blind spots such as pickup trucks.
Audi A8 L W12 (2014)
BMW M6 Convertible (2015)
BMW Z4 Roadster sDrive20i (2014)
35% have it

2. higher maximum torque

Torque is a measurement of an engine’s power, closely related to horsepower. More torque indicates a more powerful car, and is also a good indication of its acceleration.
463Nm
Tesla Roadster: 10000Nm
678Nm
270Nm

3. better fuel economy (city)

Fuel economy is a measurement of fuel efficiency, based on how far you can travel with a certain amount of petrol (gasoline). A lower fuel economy means the car will be cheaper to run.
18.2l/100 km
Ferrari 458 Spider (2013): 0l/100 km
15.7l/100 km
8.9l/100 km

4. Has four-wheel drive

Four-wheel drive is a system where torque is distributed to all four wheels of the vehicle. It is beneficial in some circumstances such as providing increased traction in tricky weather conditions, but is most suited to off-road driving.
Audi A8 L W12 (2014)
BMW M6 Convertible (2015)
BMW Z4 Roadster sDrive20i (2014)
25% have it

5. better fuel economy (highway)

Fuel economy is a measurement of fuel efficiency, based on how far you can travel with a certain amount of petrol (gasoline). A lower fuel economy means the car will be cheaper to run.
11.2l/100 km
Ferrari 458 Spider (2013): 0l/100 km
10.7l/100 km
5.6l/100 km

6. Has smart key as standard

A smart key is a wireless key that offers several benefits over a traditional key. For example when you approach the car the doors will automatically unlock, and you can turn the engine on with the press of a button.
Audi A8 L W12 (2014)
BMW M6 Convertible (2015)
BMW Z4 Roadster sDrive20i (2014)
33% have it

7. more horsepower

Horsepower is the most common unit for measuring the power of an engine.
500hp
Hennessey Venom GT (2014): 1244hp
560hp
184hp

8. greater cargo volume

A larger cargo area is more practical as it allows you to transport more things.
374l
Nissan Murano CrossCabriolet (2014): 3448l
459l
227l

9. Has Stop-Start system

A Stop-Start system automatically turns off the engine when stopping in traffic or at a red light, and seamlessly starts it again when pressure is applied to the accelerator. This saves fuel and is more ecological.
Audi A8 L W12 (2014)
BMW M6 Convertible (2015)
BMW Z4 Roadster sDrive20i (2014)
24% have it

10. Has regenerative braking

Hybrids and electric cars use regenerative braking, which captures the kinetic energy produced by braking and converts it into electricity. This then charges the battery, effectively increasing the car’s fuel efficiency.
Audi A8 L W12 (2014)
BMW M6 Convertible (2015)
BMW Z4 Roadster sDrive20i (2014)
6% have it

11. Has rear-wheel drive

Rear-wheel drive benefits from increased traction when accelerating, as the weight of the vehicle shifts to the rear over the drive wheels. The weight of the car is also more evenly distributed, resulting in improved handling.
Audi A8 L W12 (2014)
BMW M6 Convertible (2015)
BMW Z4 Roadster sDrive20i (2014)
34% have it

12. Has a turbocharged engine

A turbocharger compresses the air entering the cylinders, allowing more air (and therefore more fuel) to be added - resulting in a more powerful explosion. This leads to an increase in horsepower without increasing the size and weight of the engine.
Audi A8 L W12 (2014)
BMW M6 Convertible (2015)
BMW Z4 Roadster sDrive20i (2014)
32% have it

13. Has in-car system

An in-car system (eg. Ford SYNC, Apple CarPlay) gives you extra functionality, such as navigation, taking phone calls (when linked to your smartphone) and controlling music.
Audi A8 L W12 (2014)
BMW M6 Convertible (2015)
BMW Z4 Roadster sDrive20i (2014)
45% have it

14. Has stolen vehicle tracking system

The vehicle has a tracking system that utilises GPS, allowing you to locate it in case it is stolen.
Audi A8 L W12 (2014)
BMW M6 Convertible (2015)
BMW Z4 Roadster sDrive20i (2014)
19% have it

15. height

1.47m
Volvo XC70 (2015): 917mm
1.37m
1.29m

16. Has fully independent suspension

This allows all four wheels to move up and down independently, providing a smoother ride when, for example, going over bumps in the road.
Audi A8 L W12 (2014)
BMW M6 Convertible (2015)
BMW Z4 Roadster sDrive20i (2014)
77% have it

17. shorter length

5.27m
Renault Twizy EV 13kW (2014): 2.34m
4.9m
4.24m

18. larger fuel tank

A larger fuel tank means that you have to stop to refill less often.
90l
Ford Super Duty F-250 XL (2015): 132l
80l
55l

19. more valves

An intake valve allows the air/fuel mixture to enter the combustion chamber. An engine with more valves tends to increase performance.
48
Bugatti Veyron 16.4 Grand Sport (2013): 64
32
16

20. smaller turn radius

The turn radius indicates the smallest circular turn a car can make. With a smaller turn radius it is easier to perform a U-turn in one attempt instead of having to reverse back and forth in order to turn around.
12.7m
Scion iQ2 (2014): 4.2m
12m
10.7m

21. Has dual-clutch transmission

A dual-clutch transmission (DCT) is an automated manual transmission that allows the driver to control gear-shifts themselves or to let the computer decide. Upshifts are extremely fast, resulting in smooth acceleration, and due to the uninterrupted power flow it also has the benefit of increasing fuel efficiency.
Audi A8 L W12 (2014)
BMW M6 Convertible (2015)
BMW Z4 Roadster sDrive20i (2014)
10% have it

22. faster top speed

The fastest speed that the car can reach.
209km/h
Hennessey Venom GT (2014): 447km/h
249km/h
235km/h

23. better fuel economy (combined)

Fuel economy is a measurement of fuel efficiency, based on how far you can travel with a certain amount of petrol (gasoline). A lower fuel economy means the car will be cheaper to run.
14.7l/100 km
Peugeot 301 Berline (2014): 0l/100 km
13.2l/100 km
6.8l/100 km

24. longer wheelbase

The wheelbase is the distance between the center of the front and rear wheels. A longer wheelbase provides the car with more stability and a smoother ride (although a shorter wheelbase can provide more responsive handling).
3.12m
Toyota Tundra SR5 (2014): 3.7m
2.85m
2.5m

25. lower coefficient of drag

The coefficient of drag is one measurement of how well air travels around a vehicle. A lower value means it is more aerodynamic and the engine doesn't have to work as hard. It can result in faster speeds and lower fuel economy.
0.27Cd
Tesla Model X 75D (2016): 0.24Cd
0.33Cd
0.35Cd

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