BMW 4 Series Convertible 420d (2014)
Top 62%34 points
Top 62%
Top specs, facts and figures

BMW 4 Series Convertible 420d (2014): 25 facts and highlights

1. 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.
4.6l/100 km
Ferrari 458 Spider (2013): 0l/100 km

2. faster top speed

The fastest speed that the car can reach.
235km/h
Bugatti Veyron 16.4 Grand Sport (2013): 414km/h

3. more cylinders

Although there are many aspects that determine the power, a higher number of cylinders is generally a good indication of the potential power of the engine.
4
Bugatti Veyron 16.4 Grand Sport (2013): 16

4. Has Bluetooth

Bluetooth is a wireless technology that allows you to easily transfer data between different devices, such as smartphones, tablets and computers.
BMW 4 Series Convertible 420d (2014)
89% have it

5. faster acceleration (0-100)

The time it takes for the car to accelerate from 0-100 kilometres per hour.
8s
Bugatti Veyron 16.4 Grand Sport (2013): 2.5s

6. larger engine size

This measurement is the total volume of all the engine's cylinders, also known as the engine displacement. This is one of many aspects of an engine that determine its horsepower, but generally speaking a greater size indicates more power.
2l
Bugatti Veyron 16.4 Grand Sport (2013): 8l

7. 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.
5.2l/100 km
Porsche 918 Spyder (2015): 3.1l/100 km

8. larger fuel tank

A larger fuel tank means that you have to stop to refill less often.
57l
Bugatti Veyron 16.4 Grand Sport (2013): 100l

9. height

1.38m
Lotus Exige S Roadster (2014): 1.13m

10. weight

1.75t
Renault Megane Coupe-Cabriolet 2.0 CVT (2014): 1.63kg

11. width

2.02m
Nissan Murano CrossCabriolet (2014): 1.21m

12. more valves

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

13. 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).
2.81m
Rolls-Royce Phantom Drophead Coupe (2014): 3.32m

14. more horsepower

Horsepower is the most common unit for measuring the power of an engine.
184hp
Bugatti Veyron 16.4 Grand Sport (2013): 1001hp

15. 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.
380Nm
Bugatti Veyron 16.4 Grand Sport (2013): 1250Nm

16. 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.
BMW 4 Series Convertible 420d (2014)
58% have it

17. 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.
BMW 4 Series Convertible 420d (2014)
29% have it

18. 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.
6.1l/100 km
Ferrari 458 Spider (2013): 0l/100 km

19. USB ports

With more USB ports, you are able to connect more devices.
1
Porsche 918 Spyder (2015): 2

20. Has a diesel engine

Improvements in diesel engine technology have lead to vast gains in fuel efficiency over petrol (gasoline) cars (and even hybrids), as well as having lower carbon emissions. It is also safer as it doesn't explode as petrol can.
BMW 4 Series Convertible 420d (2014)
9% have it

21. 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.
BMW 4 Series Convertible 420d (2014)
67% have it

22. 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.
BMW 4 Series Convertible 420d (2014)
49% have it

23. more airbags

Airbags are designed to cushion occupants in the event of an impact. The standard number is around six as some cars now incorporate additional ones, such as knee airbags, side airbags and side curtain airbags.
4
Mercedes-Benz E-Class Cabriolet E220 CDI (2014): 11

24. shorter length

4.64m
Smart Passion Cabriolet (2014): 2.65m

25. less CO2 emissions

The CO2 emissions of the car, measured in grams per kilometre. A car with less emissions is better for the environment.
135g/km
Porsche 918 Spyder (2015): 72g/km

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