An interim service is the most basic type of service. And as you'd expect from a service that's every six months, the checks and changes focus on every day driving. So alongside brake, tyre, steering, suspension and fluid checks, you also get an oil change and replacement oil filter. 

When considering whether to book an interim service, it’s wise to look at how many miles you cover each year. If it’s above the average — currently 7,400 miles per year — it’s worth booking an interim service every six months to keep your car running smoothly. 

Look at the type of trips that you make too. Short trips aren’t great for your car, as they don't allow the engine oil to get hot. So if you make a lot of short journeys, an oil change and replacement filter are essential to prevent permanent engine damage. 

Remember, an interim service should never be instead of a full service. They go hand-in-hand to keep your car in shape and prevent future breakdowns.