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By: Ali Hindal
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A motorhome spends most of its life standing still, then covers hundreds of loaded miles in a burst, and that pattern is exactly what finds a weak brake or a perished tyre at the worst moment. If you own a motorhome or campervan around Cardiff, a bit of planning before the season keeps your trips about the views, not the hard shoulder.
This guide covers the three things every owner needs to stay on top of: the MOT, the service, and the pre-trip check. It also clears up the question that confuses most owners, which MOT class your motorhome is.
The motorhome year, at a glance
- The MOT covers the base vehicle only. The habitation side is a separate check that no MOT will pick up.
- Motorhomes fail on age and standing, not on mileage. Tyres, belts and brakes all suffer from sitting still.
- Tyres time out long before they wear out. Check the date code, not just the tread.
- A cambelt on a base van engine runs to a time interval as well as a mileage one, and a low mileage motorhome will hit the years first.
- Book the MOT and the service in one visit rather than across two trips, especially before the season.
- Pre-trip checks are the cheapest insurance before a long run.
Does a motorhome need an MOT?
Yes. A motorhome needs its first MOT three years after it was first registered, then every year after that, the same as a car. Because most people only use the vehicle for part of the year, the test date is easy to lose track of, so check your V5C or the online MOT history and book it before the season rather than the week you want to leave.
What MOT class is a motorhome?
Get the MOT and the service done in one visit
A motorhome that only comes out in summer needs both, and doing them separately means two trips across Cardiff. We have the height, length and axle capacity to take a coachbuilt at our Rumney workshop.
This trips up almost everyone, so here it is plainly. The class depends on weight and how the vehicle is recorded on your V5C:
- Up to 3,000kg design gross weight: usually a Class 4 MOT, the same as a car
- Between 3,000kg and 3,500kg: usually a Class 7 MOT
- Over 3,500kg: outside the ordinary MOT, into the heavy vehicle testing regime at specialist sites
The deciding figure is the design gross weight in box J of your V5C, not the model name. Not every garage can physically fit a motorhome on its ramp, which is the real reason owners get turned away, so it always pays to call ahead. Our motorhome MOT page explains what we can take.
What does the MOT actually check, and what it does not
The MOT is about the vehicle being safe to drive. It checks brakes, tyres, steering, suspension, lights, seatbelts, exhaust, emissions and the general structure. What it does not check is the living area. The gas, the electrics and the water system are a separate habitation check, so passing the MOT tells you the vehicle is roadworthy, not that the fridge and heater are sound.
Why motorhomes need servicing even at low mileage
The instinct is that a low-mileage motorhome barely needs servicing. The opposite is closer to the truth. Standing still for months is hard on a vehicle: oil and fluids degrade with time, tyres age and develop flat spots regardless of tread, brakes surface-rust, and batteries drain. A service at least once a year, ideally before the season, catches all of that. Timing belts deserve particular attention, because rubber ages by the calendar as much as the odometer, so a belt can be due on age even if the miles are low.
If yours is due, a cambelt replacement is far cheaper than the engine damage a snapped belt causes, and it is part of the motorhome servicing we carry out.
Pre-trip checks before you set off
Before a big trip, the things worth checking are the ones that standing storage punishes. Ten minutes here saves a ruined holiday:
- Tyres: look for age cracking and flat spots, not just tread, and check the pressures loaded
- Brakes: they can drag or feel uneven after months parked up
- Battery: both the vehicle and leisure batteries, for charge and condition
- Fluids: oil, coolant and screen wash, and a look underneath for leaks
- Lights and wipers: for the drive itself, especially if you will be out after dark
If you would rather hand that over, a safety check gives you an honest report before you commit to the miles, with no obligation to have work done.
Getting it all done in one visit
Not sure which MOT class yours takes?
The design gross weight on your V5C decides whether it books as class 4 or class 7, and getting it wrong wastes a trip. Send us the figure and we will confirm it before you book.
The convenient way to handle a motorhome is to line the jobs up together. A service, any repairs, and the MOT can be done in one booking, so the vehicle comes back road-legal and road-ready at the same time. At CF3 MOT & Service Centre in Rumney, we look after owners across St Mellons, Rumney, Llanrumney and the wider Cardiff area, with evening slots through the week if the motorhome is easier to move outside working hours.
Frequently asked questions
How often should I service my motorhome?
At least once a year, even on low mileage, because time degrades oil, tyres, brakes and belts. Servicing before the touring season is the ideal moment.
Is a motorhome MOT the same as a car MOT?
The safety and roadworthiness checks are the same, scaled to the vehicle. The main difference is the class, which depends on weight, and the fact that the habitation area is not part of the MOT.
Can I get my motorhome MOT and service done together?
Yes, and it is the tidiest approach. Doing both in one visit means any work the service flags can be sorted before the test, so the vehicle leaves road-ready.
My motorhome is over 3,500kg. Where do I get it tested?
Vehicles over 3,500kg fall under the heavy vehicle testing regime at specialist sites rather than an ordinary MOT station. Tell your local garage the weight and they will point you the right way.
What should I check after winter storage?
Tyres, brakes, batteries and fluids are the main ones. A pre-trip service or safety check covers all of them so nothing catches you out on the road.
Planning a trip this year? Get your motorhome serviced, MOT’d and road-ready with CF3 in Rumney. Call 07400 454839 or book online.
Motorhome servicing questions
Does the MOT cover the habitation area?
No. The MOT tests the base vehicle only: brakes, steering, suspension, tyres, lighting, structure and emissions. Gas, electrics, damp and the appliances in the living area are a separate habitation check.
How often should a motorhome be serviced if it barely moves?
Once a year regardless of mileage. Oil degrades on time as well as on distance, tyres age on time, and brakes seize from standing rather than from use. Low mileage is not low wear on a motorhome.
When do motorhome tyres need replacing?
Most manufacturers advise replacement somewhere between five and seven years regardless of tread depth, because the sidewalls perish while the vehicle stands. Read the four digit date code on the sidewall rather than judging by the tread.
Does a motorhome need an MOT at three years old?
Yes, the same as a car. The first test falls due three years from first registration, and annually after that.
Should I book the MOT and the service at the same time?
It saves a second trip across Cardiff, and it means anything the MOT flags can be dealt with while the vehicle is already with us. Before the season starts is the sensible window.
Get the habitation and the mechanical side booked together
CF3 MOT and Service Centre services and MOTs motorhomes at our six bay workshop on Wentloog Road in Rumney, with the height and length to take them. Book the MOT and the service in one visit rather than across two trips.
