Q. What is the mileage of the BMW XM?

Clean aero is as important for fuel efficiency as it is for performance in a straight line. We tell you more about how it helps in the former case

The science of cutting through air is paramount in achieving good fuel efficiency. Here's how knowing this science can help your ownership experience

Tips on using your air conditioner efficiently and much more can be found in this guide to improve fuel economy

A start-stop system turns your engine off when you are stationary and saves you fuel in the process. Here's more on how you can improve fuel economy by using start stop systems

The type of engine oil can make a huge difference to the fuel economy of your car. Here's a guide to pick the right oil