If you’ve searched for an MOT for your van and ended up more confused than when you started, you’re not alone. The terms “Class 4” and “Class 7” trip up a huge number of van owners every year and Google itself doesn’t make it easy, often serving conflicting or overly technical answers.
The good news: the answer almost always comes down to one number. Your van’s weight.
In this guide, we’ll break down exactly how to tell which MOT class your van needs, what’s actually tested in each one, and why getting it wrong can cause real problems down the line. As a DVSA-approved MOT testing station in Bedford authorised for both Class 4 and Class 7 testing, this is a question we answer for customers most weeks.
The Short Answer: It’s About Weight
Here’s the quick version, before we get into the detail:
- Up to 3,000kg design gross weight (DGW) → Class 4 MOT
- 3,001kg to 3,500kg design gross weight → Class 7 MOT
- Over 3,500kg → Not an MOT at all — it’s an HGV Annual Test
Design gross weight is sometimes called “maximum authorised mass” (MAM) or “gross vehicle weight” (GVW), and you’ll find it on your van’s VIN plate (usually inside the driver’s door frame or under the bonnet) or on your V5C logbook.
Class 4 MOT: The Basics
A Class 4 MOT covers most cars, and any van or light commercial vehicle with a design gross weight of 3,000kg or under. This is the most common MOT class on UK roads.
Typical Class 4 vehicles include:
- Small to medium panel vans (short-wheelbase Transit, Transit Connect, Vivaro, Berlingo)
- Pickup trucks (most Ford Ranger and Toyota Hilux variants)
- Campervans and motorhomes under 3,000kg
- All standard passenger cars
Class 7 MOT: The Basics
A Class 7 MOT applies to goods vehicles with a design gross weight between 3,001kg and 3,500kg — essentially, the heavier end of the van market.
Typical Class 7 vehicles include:
- Long-wheelbase or Luton-bodied vans (Ford Transit LWB, Mercedes Sprinter 313+)
- Larger panel vans used for commercial haulage
- Some heavier motorhome conversions
The inspection items are broadly the same as a Class 4 test brakes, lights, steering, suspension, tyres, emissions, bodywork, seatbelts, windscreen, and registration plate but Class 7 testing is more rigorous in a few key areas:
- Brakes and suspension are tested in greater detail, since these components face more stress at higher weights
- Tyre load ratings are checked more carefully
- Exhaust emissions are subject to more stringent checks
Not every garage holds Class 7 authorisation, because it requires a larger ramp and a brake tester rated for heavier axle weights. It’s worth checking before you book.
Common Mix-Ups We See
“My van looks commercial, so it must need a Class 7.”
Not necessarily. A short-wheelbase Transit is often under 3,000kg and is Class 4. It’s the weight on the plate that matters, not how big the van looks.
“I thought Class 7 vans need an MOT every six months.”
This is a persistent myth. Class 7 MOTs are annual, the same as Class 4. The six-month confusion usually comes from mixing it up with HGV Annual Tests for vehicles over 3,500kg, which have different rules depending on usage.
“My motorhome must be Class 7 because it’s heavy.”
Motorhomes can actually fall into Class 4, Class 7, or even a different category entirely, depending on the specific weight and how the vehicle is used. If you’re unsure, it’s best to send us your registration or weight details and we’ll confirm before you book.
What Happens If You Book the Wrong Class?
Testing a vehicle “out of class” i.e. against the wrong weight category is treated as a serious matter by the DVSA. A garage that gets this wrong risks losing its testing authorisation, and you could end up with a certificate that doesn’t actually reflect a legally valid test. This is one of the reasons it’s worth booking with a garage that explicitly lists both Class 4 and Class 7 authorisation, rather than guessing.
Over 3,500kg? You’ll Need an HGV Annual Test Instead
If your van’s design gross weight is above 3,500kg, it doesn’t fall under the MOT system at all. Instead, it needs an Annual Test, carried out at an Authorised Testing Facility (ATF) or DVSA test station which is exactly what we offer at our Bedford workshop for HGVs, PSVs, and heavier commercial vehicles. You can read the official rules on the GOV.UK overview of HGV, bus and trailer testing.
How to Check Your Van’s Class Before You Book
- Check your VIN plate — usually located on the driver’s door pillar, under the bonnet, or inside the door frame. Look for “DGW,” “GVW,” or “MAM.”
- Check your V5C logbook — the gross vehicle weight is listed in the vehicle details. The official GOV.UK guidance on the MOT inspection manual explains how design gross weight is used to determine test class.
- Still not sure? Call us with your registration number on 01234 339804 and we’ll confirm the correct class before you arrive — so you’re never caught out on the day.
Book Your Class 4 or Class 7 MOT in Bedford
UK Truck & Plant Group is a DVSA-approved MOT testing station authorised for Class 4, Class 7, HGV, and PSV testing, based at Transport Yard, Ampthill Road, Bedford. We offer same-day Class 4 and Class 7 MOTs subject to availability, along with free pre-MOT checks if you’d like peace of mind before your test date.
Book your MOT online →
Or call us on 01234 339804
FAQs
What’s the weight cutoff between Class 4 and Class 7?
Class 4 covers vehicles up to 3,000kg design gross weight. Class 7 covers 3,001kg to 3,500kg. Above 3,500kg, you need an HGV Annual Test instead of an MOT.
Is a Class 7 MOT more expensive than a Class 4?
Generally yes, Class 7 tests tend to cost slightly more than Class 4 due to the additional checks and equipment required, though exact pricing varies by garage.
Do Class 7 vans need an MOT every 6 months?
No. Class 7 MOTs are annual, the same as Class 4. The six-month rule does not apply to standard Class 7 testing.
Can any garage do a Class 7 MOT?
No. Class 7 testing requires specific equipment, including a larger ramp and a heavier-duty brake tester, so not all MOT stations are authorised for it. Always check before booking.
My van is a zero-emission vehicle does the weight limit change?
Yes. Zero-emission goods vehicles need a Class 7 MOT if their design gross weight is between 3,501kg and 4,250kg, slightly higher than the standard diesel/petrol cutoff, to account for battery weight.
