Every motorhome pays the car rate: £3.50 pay-as-you-go, £2.80 on a pre-pay account. Weight does not change it, whatever you have read about 3.5 tonnes. The one thing that does change your journey is height: over 4.88m you are tunnel-banned and diverted to the bridge, at the same price. This page covers the class rule, the height rule, and whether pre-pay is worth it for a holiday crossing.
PAYG
£3.50
Pre-pay
£2.80
Fiat Ducato, Peugeot Boxer and Sprinter-based coachbuilts, panel-van conversions, low-line and high-line A-class, US-import RVs, lorry-based conversions and tag-axle chassis. If the V5C says motor caravan, this is your rate.
A conversion that DVLA still has on record as a panel van. Until the V5C body type is changed to "motor caravan", the cameras read a goods vehicle, and a 2-axle goods vehicle is Class C at £4.20 per crossing.
This catches self-builds and part-finished conversions. It is the paperwork that decides it, not the bed, the hob or the weight. If you have fitted out a van and never had the body type updated, check the V5C before you assume the car rate.
The Maximum Authorised Mass on your V5C governs your licence category, your speed limits and your tolls in France. It does not govern the Dart Charge. The Dartford-Thurrock Crossing Charging Scheme Order 2013 lists motor caravans in Class B as class L(a), and that class is defined by having living accommodation built in, not by a weight. The same order takes its goods classes from axle count rather than mass. So there is no figure on your plate that moves a motorhome up a class.
The two Dartford Tunnels carry northbound traffic only. Both have a 4.88-metre height limit. Vehicles taller than that, including any motorhome over 4.88m, are diverted in both directions to the QE2 Bridge, which has no general height restriction.
| Motorhome type | Typical height | Tunnel or bridge? |
|---|---|---|
| Panel-van conversion (LWB) | 2.5-2.8m | Tunnel northbound, bridge south |
| Low-profile A-class | 2.7-2.9m | Tunnel northbound, bridge south |
| Overcab coachbuilt | 2.9-3.2m | Tunnel northbound, bridge south |
| High-profile A-class | 3.0-3.3m | Tunnel northbound, bridge south |
| Twin-axle American RV | 3.5-4.5m | Tunnel northbound, bridge south (usually under 4.88m) |
| Converted lorry / heavy RV | 4.5m+ | Bridge both directions (over 4.88m) |
The toll is the same regardless of which route. The diversion is for safety, not price.
Cars
£3.50 PAYG, £2.80 pre-pay.
Vans
£4.20, at any weight. Not the car rate.
Minibuses
Class B if 9 seats or fewer.
Motorcycles
Free, every direction.
Tunnel/bridge rules
Height limit, wind closures.
Pre-pay account
The 70p / crossing saving, in detail.
Every motorhome is Class B and pays the car rate: £3.50 pay-as-you-go or £2.80 on a pre-pay account. Weight makes no difference. gov.uk lists "motorhomes" in Class B with no qualifier, and the charging order puts them in class L(a), motor caravans, which has no mass limit written into it. A 7-tonne A-class pays the same as a hatchback.
4.88 metres (about 16 feet). Motorhomes taller than 4.88m can't use the Dartford Tunnels northbound and are diverted to the QE2 Bridge in both directions. Most A-class motorhomes are around 3 metres tall; only some heavy-duty American RVs and converted lorries exceed the limit.
No general height restriction. The bridge handles all motorhome and lorry heights southbound and accepts the diverted northbound tall vehicles via the western lane. Cross-winds can be an issue for tall, light vehicles; National Highways lowers the limit to 30mph in moderate winds.
No. It is widely repeated that a motorhome over 3.5 tonnes moves up a class, but the Dartford charging scheme contains no weight threshold at all. What decides your class is the kind of vehicle: a motor caravan is Class B, a goods vehicle is Class C or D by axle count. The Maximum Authorised Mass on your V5C changes nothing about what you pay here.
No. The three-axle Class D rate applies to goods vehicles and to large passenger vehicles with more than 9 seats, not to motor caravans. A tag-axle or twin-rear-axle motorhome is still class L(a) in the charging order, so it stays Class B at the car rate.
It stays Class B. The charging order says the classes include vehicles when drawing a trailer, so hitching up a car or a trailer does not change the class or the price. Nor does the combined weight.
For a single one-way crossing it is not worth the setup. The £15 minimum is balance you spend on crossings rather than a fee, so nothing is lost if you use it, but any balance left over sits on a dormant account until you claim it back. For a return trip to a Channel port and back, pre-pay saves 70p each way. For a single weekend, just pay PAYG.
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