Loading the question bank
Revision question · Safety and your vehicle
Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.
If you don't have your vehicle serviced regularly, the engine will gradually become less efficient. This will cause increased fuel consumption and, in turn, an increase in the amount of harmful emissions it produces.
Reviewed reading for this question