C1 and C1E differ mainly in the trailer entitlement. C1 covers medium-sized vehicles with a maximum authorised mass (MAM) above 3,500kg and up to 7,500kg, towing a trailer up to 750kg MAM. C1E covers a C1 vehicle towing a trailer above 750kg, with a combined MAM limit of 12,000kg. A restriction such as code 107 can lower that limit.
Before choosing training or buying a trailer, check three things together: your current licence record, the vehicle’s weight plate and the trailer’s weight plate. The examples below explain how those checks fit together under Great Britain’s licensing rules.
C1 versus C1E: the key weight limits
- C1: a medium-sized vehicle up to 7,500kg MAM, with a trailer no heavier than 750kg MAM.
- C1E: a C1 vehicle with a trailer above 750kg MAM, within the 12,000kg combined MAM limit.
- C1E with code 107: a restricted entitlement with an 8,250kg combination limit.
These category limits do not override the vehicle’s own towing capacity. The official driving licence categories explain the entitlements; the manufacturer’s limits tell you what the particular vehicle can tow.
Use the plated MAM, not an empty-vehicle estimate
MAM is the permitted weight of a vehicle or trailer including its maximum load. It is not the same as its unladen weight, or what it happens to weigh on a quiet journey. You may also see the term gross vehicle weight (GVW).
For example, a trailer plated at 1,500kg MAM does not become a 750kg-MAM trailer because you leave it empty. Use the figures on the plates when checking the licensing category, then check that the actual loaded weights stay within all relevant limits.
The GOV.UK vehicle weight definitions explain these terms. Look for gross train weight as well: this relates to the loaded towing vehicle and trailer together. Check the manufacturer’s towing limits, axle limits and towing equipment before relying on a combination calculation.
What does C1E code 107 mean?
Code 107 means the entitlement is limited to 8,250kg. For a C1E entry, that is an important restriction on the vehicle-and-trailer combination. Seeing “C1E” on the licence is therefore not enough to assume you have the unrestricted 12,000kg entitlement.
Drivers who passed their car test before 1 January 1997 may have acquired C1 and restricted C1E rights. Check the categories, restriction codes and expiry dates actually recorded for you, rather than relying on the year you passed alone. DVLA’s old-to-new category comparison shows the restricted C1E category, and its licence code list explains code 107.
You can check your own record using the DVLA driving licence information service. If an entry or restriction is unclear, resolve that before booking a course for a heavier combination.
Three example combinations
The following examples use illustrative plated weights. Check your current entitlement and the manufacturer’s limits for each real combination.
- 7,500kg vehicle + 750kg trailer = 8,250kg. This fits the ordinary C1 category’s trailer threshold, subject to your entitlement and the vehicle’s own limits.
- 6,500kg vehicle + 1,500kg trailer = 8,000kg. The trailer exceeds 750kg, so C1 alone is insufficient. The combination falls within the weight ceilings of both restricted C1E (107) and unrestricted C1E.
- 7,500kg vehicle + 2,000kg trailer = 9,500kg. This exceeds the 8,250kg code 107 limit, although it is below the unrestricted C1E ceiling. A restricted C1E entry would not cover it.
For each example, the towing vehicle must also be suitable for the trailer. A licence entitlement cannot increase a manufacturer’s lower towing limit.
Does car-and-trailer entitlement give you C1E?
No. B+E is a separate entitlement for car-and-trailer combinations; it does not automatically give you medium-sized lorry-and-trailer entitlement. The car towing rules changed in December 2021, so older advice about having to take a B+E test can be misleading. Check the current car towing guidance if your towing vehicle falls within category B.
Do not assume every vehicle above 3,500kg needs the same licence route either: current category B rules include specific zero-emission vehicle allowances. Identify the actual vehicle category and check your own entitlement before deciding which course you need.
A horse trailer behind a car and a self-propelled horsebox are different starting points. Identify the vehicle category before adding the trailer to your entitlement check.
Do you have to pass C1 before C1E?
Not necessarily. DVLA’s guidance on adding higher categories says you do not need to pass a lower-category test first. That does not mean you can drive the larger combination immediately: you still need the appropriate provisional entitlement, preparation and successful test outcome.
If you hold acquired C1E (107) rights and want the higher combination limit, check the specific upgrade requirements in DVLA’s towing entitlement leaflet. Ask about the route for your existing record instead of assuming everyone needs the same package.
Check the required category before booking training
Have your current categories and restriction codes, both plated MAM figures, intended vehicle use and postcode ready when discussing training. This helps distinguish ordinary C1 training from a trailer-entitlement enquiry.
If your vehicle requirement is ordinary C1, explore our C1 licence training information. Learners researching options from St Helens can also read the C1 course information for St Helens, then ask us to confirm the actual training venue and arrangements before booking.
For a trailer combination, contact 123HGV with the vehicle and trailer details and ask the team to confirm the appropriate next step and whether the required training can be accommodated before booking.
Official guidance checked on 13 November 2026. Recheck your recorded entitlement and the linked GOV.UK guidance before choosing training or towing.