Motorhome Servicing Explained: MOTs & Maintenance Costs

What Does Motorhome Servicing Actually Involve?

A motorhome is two things at once.

It is a vehicle, so it needs the usual mechanical care: engine, brakes, tyres, suspension, lights and MOTs.

But it’s also a living space, so it has extra systems to look after: gas, electrics, water, heating, ventilation, appliances and damp prevention.

That is why motorhome servicing can sound a bit more complicated than car servicing at first. In reality, it just means looking after both sides of the motorhome properly.

The vehicle side keeps you safe on the road. The habitation side keeps you safe and comfortable when you are parked up.

Both matter, and in this guide we will delve into all the details you need to know about motorhome servicing.

Quick Answer: What Servicing Does a Motorhome Need?

A motorhome usually needs three types of regular care:

• MOT or vehicle test: in Great Britain, a motorhome normally needs an MOT every year once it is over three years old, unless exempt. Northern Ireland has separate testing arrangements, so owners there should check the current DVA rules.
• Mechanical service: engine, brakes, tyres, fluids, filters and chassis checks.
• Habitation check: gas, electrics, water, appliances, damp and living-area safety.

A good maintenance routine helps keep your motorhome safe, reliable, comfortable and easier to sell later.

Motorhome MOT vs Service vs Habitation Check

These three things are often confused, but they are not the same.

Think of it this way:

• The MOT checks whether the motorhome is roadworthy.
• The mechanical service helps keep it running properly.
• The habitation check looks after the part you live in.

Does a Motorhome Need an MOT?

In Great Britain, yes, once the motorhome is over three years old, unless it qualifies for an exemption. Northern Ireland has separate DVA vehicle testing rules, so NI owners should check the current local requirements.

In Great Britain, most motorhomes need an MOT every year once they are over three years old, unless they qualify for an exemption. Motor caravans are not treated as goods vehicles for MOT purposes. DVSA guidance says they are tested as Class 4 or Class 5 depending on seating capacity, regardless of size or weight. For most private motorhomes, this usually means Class 4, but you should always check the correct MOT class with the testing station before booking.

This is an important correction because people sometimes assume heavier motorhomes automatically need a Class 7 MOT. For motor caravans, the MOT classification is not simply the same as a goods van.

Always check your vehicle and testing station, but most private motorhomes will be Class 4. The main exception is seating capacity: DVSA guidance says motor caravans can be Class 4 or Class 5 depending on seating capacity, regardless of size or weight.

What Does a Motorhome MOT Check?

A motorhome MOT checks whether the vehicle is safe and roadworthy. It usually includes checks on:

• Lights
• Brakes
• Tyres
• Steering
• Suspension
• Seatbelts
• Windscreen and wipers
• Mirrors
• Horn
• Exhaust
• Emissions
• Registration plates
• Vehicle structure
• Fuel system

The MOT does not check whether the living area is comfortable, whether the fridge works properly, whether there is damp behind a panel or whether the gas appliances are working safely in the same way a habitation check would.

That is why relying on an MOT alone is not enough.

How Much Does a Motorhome MOT Cost?

The maximum MOT fee for a Class 4 motor caravan is £54.85, according to GOV.UK. If a vehicle falls into a different MOT class because of seating capacity or use, the fee may differ, so always check the correct class before booking.

Some garages charge less, but they cannot charge more than the legal maximum for that test class.

If your motorhome fails, you may need to pay for repairs and possibly a retest, depending on the circumstances and timing.

Common MOT failure areas can include:

• Tyres
• Brake imbalance
• Worn suspension parts
• Lights
• Windscreen wipers
• Corrosion
• Emissions issues

It is worth checking the basics before your MOT. A blown bulb or worn wiper blade is an annoying reason to fail.

Are Older Motorhomes Exempt From an MOT?

Some historic vehicles may be exempt from MOT testing if they were built or first registered more than 40 years ago and have not been substantially changed in the last 30 years. You still need to keep the vehicle roadworthy, and you must declare the MOT exemption when taxing it.

However, exemption does not mean you can ignore safety. The vehicle still needs to be roadworthy.

If you own a classic motorhome, it is sensible to get professional checks even if the law does not require an MOT.

What Is a Mechanical Motorhome Service?

A mechanical service is similar to servicing a car or van. It looks after the base vehicle – the engine, chassis and road-going parts.

Depending on the service level, it may include:

• Engine oil change
• Oil filter replacement
• Air filter check or replacement
• Fuel filter check or replacement
• Pollen filter check or replacement
• Brake inspection
• Fluid checks and top-ups
• Battery check
• Tyre inspection
• Suspension checks
• Steering checks
• Exhaust inspection
• Diagnostic checks
• Road test

The service schedule depends on the base vehicle, mileage, age and manufacturer guidance.

Even if you do low mileage, annual servicing is still sensible. Motorhomes often spend long periods parked up, and lack of use can create its own issues with batteries, brakes, tyres and fluids.

How Often Should a Motorhome Be Serviced?

As a general rule, many owners service their motorhome once a year or according to the mileage interval recommended by the manufacturer.

You should check the service book and base vehicle guidance for the exact schedule.

A sensible routine is:

• MOT: every year once over three years old
• Mechanical service: annually or by mileage, whichever comes first
• Habitation check: annually
• Tyre checks: before every trip
• Fluid checks: regularly, especially before longer journeys
• Damp checks: at least annually, or sooner if you notice signs

If you use your motorhome heavily or travel long distances abroad, you may need checks more often.

What Is a Habitation Check on a Motorhome?

A habitation check is a specialist inspection of the living area of your motorhome. It is different from an MOT and different from a mechanical service.

It usually looks at:

• Gas system
• Electrical system
• Water system
• Heating
• Ventilation
• Appliances
• Fire safety
• Bodywork seals
• Damp levels
• Windows and rooflights
• Doors and lockers
• Fixtures and fittings

The aim is to make sure the living space is safe, dry and working as it should.

For many owners, this is the check that gives peace of mind before the main touring season.

What Does a Habitation Check Include?

A habitation check can vary slightly depending on the workshop, but it will often include the following.

Gas Safety Checks

This may include:

• Gas leak testing
• Regulator checks
• Hose condition
• Appliance operation
• Flame picture
• Ventilation
• Carbon monoxide risk checks

Gas is one area where DIY guesswork is not worth it. If something smells wrong, looks wrong or behaves oddly, get it checked by a qualified professional.

Electrical Checks

This may include:

• 12V system
• 230V mains hook-up system
• RCD protection
• Charger operation
• Leisure battery condition
• Sockets
• Lighting
• Solar charging, if fitted

Water System Checks

This may include:

• Fresh water system
• Waste water system
• Pumps
• Taps
• Shower
• Water heater
• Leaks
• Toilet system

Damp Checks

Damp is one of the biggest things to watch in a motorhome.

A habitation check usually includes moisture readings around key areas such as windows, doors, rooflights, walls, floors and corners.

Catching damp early can save a lot of money.

Appliance Checks

Depending on what is fitted, the check may include:

• Fridge
• Cooker
• Hob
• Oven
• Grill
• Heating
• Hot water
• Extractor fans
• Control panels

A habitation check is not just about finding problems. It is about preventing them.

Is a Habitation Check a Legal Requirement for a Motorhome?

For most private motorhome owners, an annual habitation check is not usually a legal requirement in the same way as an MOT.

But it is still strongly recommended.

It may help with:

• Safety
• Warranty requirements
• Insurance expectations
• Resale value
• Damp prevention
• Appliance reliability
• Peace of mind

If your motorhome is still under warranty, always check the manufacturer’s servicing requirements.

How Much Does Motorhome Servicing Cost?

Costs vary depending on the motorhome, workshop, location, base vehicle, age and what work is needed.

As a broad UK guide:

These are only guide figures. A larger motorhome, older vehicle, premium base vehicle or overdue service can cost more.

The best approach is to ask for a written quote and check exactly what is included.

Why Motorhome Maintenance Costs Can Vary

Two motorhomes can be the same length and still cost different amounts to maintain.

Costs can vary because of:

• Base vehicle make and model
• Engine size
• Age
• Mileage
• Service history
• Parts availability
• Tyre size
• Damp issues
• Appliance type
• Whether specialist access is needed
• Whether repairs are found during inspection

A well-looked-after motorhome may cost less over time because small issues are picked up early.

That is the whole point of regular maintenance.

Tyres: One of the Biggest Safety Checks

Motorhome tyres need special attention.

Not because they are complicated, but because motorhomes often sit still for long periods. Tyres can age, crack or flat-spot even if the tread looks fine.

Before every trip, check:

• Tyre pressures
• Tread depth
• Sidewall cracks
• Bulges
• Uneven wear
• Valve condition
• Spare wheel or repair kit
• Load rating

Do not rely on tread alone. An old tyre can look acceptable but still be unsafe.

If you are unsure, ask a professional to check the age and condition.

Batteries and Electrical Care

Motorhomes usually have at least two batteries:

• A starter battery for the engine
• A leisure battery for the living area

Both need care, especially if the motorhome is stored for long periods.

To look after your batteries:

• Keep them charged
• Avoid leaving the vehicle unused for too long
• Use a smart charger if appropriate
• Check terminals for corrosion
• Monitor battery health
• Understand what your solar panel, if fitted, is actually charging

A flat battery is one of the most common issues when a motorhome has been parked up for a while.

Water System Maintenance

The water system is easy to forget until something smells odd, tastes strange or stops working.

A good routine includes:

• Draining down when not in use
• Cleaning the fresh water tank
• Flushing the system
• Emptying waste water regularly
• Checking for leaks
• Cleaning taps and showerheads
• Protecting against frost in winter

If you use your motorhome regularly, keeping the water system clean becomes second nature.

If you store it over winter, drain it properly to reduce the risk of frost damage.

Gas Safety

Gas systems should be treated with respect.

Proper testing and repairs should be left to a suitably qualified gas engineer or leisure-vehicle technician. If the motorhome is hired out or used commercially, additional gas safety duties may apply.

However, you can keep an eye on:

• Gas hose condition
• Regulator age and condition
• Whether appliances light properly
• Whether flames burn cleanly
• Any smell of gas
• Carbon monoxide alarm function

If a cooker flame is yellow, an appliance is not working properly or you smell gas, stop using the system and get it checked.

Make sure you have a working carbon monoxide alarm and smoke alarm.

Damp: The Problem You Want to Catch Early

Damp is one of the biggest concerns with motorhomes, especially older ones.

It can come from failed seals, rooflights, windows, doors, lockers or bodywork joints. Left alone, it can become expensive.

Signs of damp can include:

• Musty smells
• Soft wall panels
• Staining
• Bubbling surfaces
• Cold or wet patches
• Mould
• Floor softness
• Condensation that does not clear

A professional damp check can pick up moisture before obvious damage appears.

If you are buying a used motorhome, a damp check is one of the most useful things to have.

DIY Motorhome Maintenance You Can Do Yourself

You do not need to be a mechanic to look after the basics.

Before trips, check:

• Oil level
• Coolant level
• Screenwash
• Tyre pressures
• Tyre condition
• Lights
• Wipers
• Mirrors
• Gas bottle level
• Fresh water
• Waste water
• Leisure battery charge
• Hook-up cable condition

After trips, it is worth:

• Emptying waste water
• Emptying and cleaning the toilet cassette
• Removing food
• Ventilating the interior
• Charging batteries
• Cleaning the fridge
• Checking for leaks
• Leaving cupboards slightly open if storing

Small habits make a big difference.

What to Check When Buying a Used Motorhome

Servicing matters even more when buying used. Before you buy, ask for:

• MOT history
• Mechanical service history
• Habitation check records
• Damp reports
• Evidence of repairs
• Appliance manuals
• Warranty information
• Tyre age
• Mileage records
• Number of keys
• V5C logbook
• Finance clearance, if applicable

A motorhome with a good history is often worth paying more for.

It suggests the previous owner looked after it properly, and it gives you more confidence before your first trip.

How Servicing Helps Resale Value of Your Motorhome

A motorhome with strong service history is easier to trust.

When you come to sell or part-exchange, buyers will want to know it has been cared for. Stamped service books, MOT history, habitation checks and repair invoices all help tell that story.

Good motorhome maintenance can support:

• Buyer confidence
• Better resale appeal
• Fewer awkward questions
• Easier part-exchange
• Stronger long-term reliability

You may not get every penny back, but a well-maintained motorhome is usually easier to sell than one with gaps in its history.

Annual Motorhome Maintenance Checklist

For your motorhome, we recommend that once a year, you aim to check or arrange:

• MOT
• Mechanical service
• Habitation check
• Damp inspection
• Gas system check
• Electrical system check
• Tyre inspection
• Brake inspection
• Battery health check
• Water system clean
• Appliance check
• Rooflight and window seal check
• Insurance renewal
• Breakdown cover
• Vehicle tax, often called road tax
• Security review

This may sound like a lot, but most of it becomes routine once you own the vehicle.

Final Thoughts: Keeping Your Motorhome Safe, Comfortable and Ready to Go

Motorhome servicing is not just about ticking boxes, it’s about what keeps your motorhome ready for the trips you bought it for.

The MOT keeps it legal and roadworthy. The mechanical service keeps the base vehicle running properly. The habitation check looks after the space you actually live in when you are away.

Together, they help protect your motorhome, your safety and your enjoyment.

The best approach is simple: keep up with annual checks, deal with small problems early and build a routine before each trip. That way, when you decide to head off for the weekend, your motorhome is ready too.

If you need help understanding servicing, MOTs, habitation checks or what to look for when buying a used motorhome, speak to the Jordans Leisure team. We’ll keep things clear, practical and honest, so you can spend less time worrying about maintenance and more time enjoying the road.