Car service intervals: time or mileage, which comes first?
Whichever comes first — and why the time limit matters more than people think.
Oil degrades whether or not the car is moving. A low-mileage car driven on short journeys can need servicing more urgently than a motorway car with three times the mileage, because the engine rarely reaches temperature and moisture never burns off.
Every car we list shows its service history, so you can compare before you buy. Browse our used cars for sale.