You need the largest motorhome that fits your storage situation, stays under 3,500kg if anyone driving it passed their test after 1997, and doesn’t price you out of the ferry routes you’ll actually use. Everything else is negotiable.
You’ve been looking at motorhomes for three months. You know exactly what you want: fixed bed, proper shower, enough space that you’re not climbing over each other when it rains. Then you buy it, drive it home, and realise it doesn’t fit down the side of your house. Your partner – who passed their test in 2003 – asks if they can drive it. You check the V5C. It’s 3,650kg. They can’t. Storage quotes come back at £120 a month. The ferry to France? £340 each way because you’re in the 8-metre pricing band.
The sales guy never asked about any of this.
Why Size Isn’t About Berths
Most buyers think about motorhome size in terms of how many people it sleeps. Four berths, six berths, that sort of thing. This is backwards. The number painted on the V5C document is almost meaningless for how you’ll actually use the vehicle.
What matters is where you can physically put it when you’re not using it, who can legally drive it, and what it costs to move it around Europe. These three constraints determine usable size far more than whether you’ve got a dinette that converts or bunk beds over the cab.
The storage question comes first. If you haven’t got off-road parking that fits the vehicle, you’re paying for storage. In the South East, that’s £100-£140 per month. Over a ten-year ownership period, that’s £12,000-£16,800. Added to your purchase price, that’s the actual cost of choosing a motorhome that doesn’t fit your property.
The licence question catches nearly everyone. If you passed your driving test after 1 January 1997, you can only drive vehicles up to 3,500kg Maximum Authorised Mass (MAM) on a standard car licence. Check the V5C before you commit to anything. Your DVLA C1 licence category matters more than the floor plan. If your partner can’t legally drive the motorhome, you’re the only driver on every single trip. No shared driving on long runs. No letting them move it while you sort a pitch. Get ill or injured, and the vehicle sits where it is until you’re well enough to drive.
Getting C1 entitlement back costs around £1,500 once you factor in the medical, provisional licence, training, and test fees. That’s fine if you’ve budgeted for it. Most people haven’t.
The motorhome that forces you into paid storage has just cost you the equivalent of a week-long trip to Scotland every single month for the next decade.
The Width and Height Problem Nobody Mentions
Length gets all the attention. Height and width are what actually restrict you day-to-day.
Most panel van conversions – the type that look like commercial vehicles – are around 2 metres tall. Sounds perfect for slipping under car park barriers. Except those barriers are set at 1.9 metres or 2.1 metres depending on the car park operator’s mood. You’ll spend half your time circling to find somewhere that’ll take you. The 2.5-2.7 metre coachbuilt motorhome, ironically, causes less stress – you know you’re not getting in, so you plan accordingly and use park-and-ride or dedicated motorhome parking.
Width matters more than most people realise. The Fiat Ducato base vehicle (also sold as Peugeot Boxer and Citroën Relay) is 2.05 metres wide before the conversion company adds anything. Some rural campsites in Wales and Scotland have track widths that make manoeuvring a 2.3-metre-wide A-class genuinely difficult. Not impossible, but enough that you’re doing a twelve-point turn with your partner outside shouting instructions while scraping past a hedge.
Working Backwards From Your Actual Constraints
Here’s how to work out what size motorhome you actually need, not what size you want:
First: measure your storage. Driveway, side return, street parking if that’s legal in your area. Add 30cm to the length for margin – you’re not parking it with millimetre precision in the dark after a long drive. If your only option is street parking, check your local council’s regulations. Many ban vehicles over 6 metres or classify anything over 3,500kg as a commercial vehicle requiring a permit.
Second: check who’s driving. Pull out your driving licence. If you passed after 1 January 1997, look at the MAM on any motorhome you’re considering. Anything over 3,500kg, you can’t drive it. Your insurance won’t cover you. It’s not a grey area.
Third: price a ferry crossing. Go to Brittany Ferries or whichever operator you’ll actually use, and run quotes for a 6-metre vehicle, a 7-metre vehicle, and an 8-metre vehicle on your preferred route. The price bands change sharply at these lengths. A 7.8-metre motorhome will cost you the same as an 8.5-metre one, but £80-120 more each way than a 6.5-metre model. Over ten years of annual trips, that’s £1,600-2,400 in ferry costs alone.
Fourth: check campsite restrictions. If you’re planning to use The Camping and Caravanning Club sites – and many people do because they’re well-maintained and widely available – check their pitch lengths. Most club sites cap pitches at 8 metres. Your 8.5-metre A-class won’t fit. You’ve just excluded yourself from a significant chunk of the UK’s campsite network.
What Each Size Category Actually Gets You
Once you know your constraints, here’s what each size range delivers in practical terms:
Under 6 metres: Panel van conversions, compact coachbuilts. Two people comfortably, three at a push. Usually under 3,000kg so anyone can drive it. Fits most parking spaces. Cheapest ferry band. The compromise is headroom and storage – you’re living in a space the size of a garden shed.
6-7 metres: The practical sweet spot for most buyers. Enough space for a fixed bed, separate shower, and somewhere to sit that isn’t the cab seats. Still fits most campsites. Still (usually) under 3,500kg if you’re careful with the specification. Mid-range ferry pricing. This is where campervans become motorhomes in practical terms.
7-8 metres: Proper family layouts, bunk beds, bigger washrooms. You’re into the higher ferry bracket, and you’ll get turned away from some smaller sites, but it’s still manageable. Often tips over 3,500kg, so check licences carefully. Resale is slower than 6-7 metre models but not disastrously so.
Over 8 metres: A-class motorhomes, large coachbuilts with garages. You’re buying for specific use cases: long-term touring, permanent residence, carrying motorbikes or bikes in the garage. Storage is difficult. Ferry costs are high. Many campsites won’t take you. This only makes sense if you’re using it heavily – 100+ nights a year – or you’ve got unlimited off-road storage at home.
A 5.4-metre panel van that won’t fit under city car park barriers is more restrictive than a 6.5-metre coachbuilt that you can actually sleep in properly. Length matters less than weight and height for day-to-day usability.
What Actually Happens When You Get This Wrong
Get the size wrong and you’ll pay for it in three ways: money, access, and resale.
Money: £1,440 per year in storage you didn’t budget for. £250+ extra each way on ferries because you’re in the 8-metre band instead of the 6-metre band. £1,500 to get your partner through C1 training and testing because they can’t legally drive the 3,650kg motorhome you just bought.
Access: Turned away from 40% of club sites because your 8.2-metre motorhome won’t fit an 8-metre pitch. Unable to use the mountain passes in the Pyrenees or Dolomites because there are width and length restrictions you didn’t know about. Spending an hour finding parking in any town because you’re too tall for multi-storey car parks and too long for street parking.
Resale: Oversized motorhomes – anything over 7.5 metres or 3,850kg – sit on forecourts for 6-8 months longer than mid-sized models. Dealers know this. They’ll offer you less on part-exchange because they know it’s harder to shift. You’ll lose an extra £3,000-5,000 on resale compared to a more sensibly sized equivalent.
Frequently Asked Questions
What’s the best motorhome size for a couple?
Six to seven metres is the practical range for two people. You get a fixed bed, a proper washroom, and enough space to exist in bad weather without wanting to kill each other. Anything smaller and you’re compromising comfort. Anything larger and you’re paying for space you’re not using while making ferry crossings and campsite access more difficult.
Can I drive a motorhome over 3,500kg on a car licence?
Only if you passed your driving test before 1 January 1997. If you passed after that date, you need to pass a separate C1 test to drive vehicles between 3,500kg and 7,500kg. Check the MAM (Maximum Authorised Mass) on the V5C document before you commit to buying anything. Your insurance won’t cover you if you’re driving a vehicle you’re not licenced for.
Do motorhome lengths include the tow bar?
No. The length on the V5C is bumper to bumper, excluding any tow bar, bike rack, or other accessories fitted to the back. Ferry operators and campsites measure the actual length including anything that sticks out, so if you’ve got a bike rack permanently fitted, add that to your quoted length when booking.
How much does motorhome storage cost?
Indoor storage ranges from £80-140 per month depending on location, with the South East at the top end. Outdoor storage with security is £50-80 per month. If you’re looking at a motorhome that won’t fit your property, factor in £1,000-1,500 per year in storage costs as part of the total cost of ownership. Over ten years, that’s £10,000-15,000 added to your purchase price.
