These are common questions we get asked when someone is interested in our BMW lease deals. For example, a brand new BMW 3 Series Saloon '320d xDrive MHT M Sport 5dr Step Auto' is a vehicle you can lease through our website. Let us explain it. 320d refers to the engine size and fuel, with the 320 being a 2.0-litre engine and the 'd' referring to the fuel as diesel. Any BMW vehicle with 'i' in it is a petrol. So a 320i would be a 2.0 petrol engine. Any BMW vehicle with 'e' in it is a plug-in hybrid (PHEV). So a 330e would be a 2.0-litre PHEV. xDrive simply means all-wheel drive (AWD). MHT stands for Mild Hybrid Technology, which means the vehicle is equipped with a self-charging battery such as a 48 Volt model. MHT and PHEVs are different. PHEVs require charging with a separate cable but MHT self-charges itself when the BMW is running on fuel. And finally, Step simply means Steptronic transmission which can be switched between fully automatic and manual modes. If you see a BMW with Step in the name, it will be an automatic variant.