Which vehicles can you MOT?

Class 4 vehicles. Under the gov.uk MOT classes, these include cars with up to 8 passenger seats, and private hire vehicles with up to 8 seats.

Can a warning light fail the MOT?

It can. DVSA's MOT inspection manual lists an engine warning lamp that shows a fault as a Major defect on diesels first used from 1 July 2008. If a warning lamp is on, we can diagnose why before the test.

MOT testing

Class 4 MOT tests at our on-site bay

Reverie Autocare tests cars in its own Class 4 MOT bay at 57 Great North Road, Welwyn Garden City. If the test finds a problem, we explain it and give you a written quote, and no repair starts without your written approval.

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Last updated 12 November 2026

Where is the MOT done?

In our own Class 4 MOT bay, at our centre at 57 Great North Road, Welwyn Garden City. The test is carried out on site.

Which vehicles can you test?

We test Class 4 vehicles. Under the MOT classes on gov.uk, Class 4 includes:

cars with up to 8 passenger seats
private hire vehicles with up to 8 seats

If you are not sure which class your vehicle is in, send us the registration and we will check.

Driving for a private hire operator? You can ask for our PCO pre-inspection check alongside the MOT.

What happens if my car fails?

We explain each failure item, with photos where it helps.
You get a written quote for the repairs.
No repair starts until you give your written approval.
You decide what is repaired, and when.

DVSA sets the rules for retests. You can read them on gov.uk.

Can I book a service with my MOT?

Yes. Because the MOT bay is on site, you can ask to book your MOT and a service on the same visit. See car servicing.

What does the MOT check on emissions?

DVSA’s MOT inspection manual, updated on 14 October 2026, lists these as Major defects:

Emission control equipment that is missing, obviously modified or obviously defective. The parts named include diesel particulate filters (DPFs), EGR valves and SCR valves.
Evidence that a DPF has been tampered with.
Visible smoke of any colour from a car fitted with a DPF.

We repair emissions systems. We never remove or disable them.

If an engine warning lamp is on, or you are worried about a DPF, see car diagnostics or our DPF and emissions health check.

Can I wait while the test is done?

Ask when you book whether your job can be done while you wait. Our centre has three customer waiting areas, a co-working space, a multi-faith prayer room and a quiet room.

How do I book?

Use the enquiry form. Give us your registration and a preferred date, and we reply during opening hours: Monday to Friday 8am to 5pm, and Saturday 8am to 1pm.

Our promise on every job

Written approval before any extra work
Photographic proof of what we find
A promised update time
No surprise invoice
A test drive and verification where appropriate

Our service centre

Where will my car be looked after?

At our centre at 57 Great North Road, Welwyn Garden City, built so that waiting for your car is not wasted time.

Seven ramps and an on-site MOT bay
Three customer waiting areas
A co-working space with Wi-Fi
A multi-faith prayer room and quiet room
Lavazza coffee
Customer parking

Questions people ask us

Which vehicles can you MOT?: Class 4 vehicles. Under the gov.uk MOT classes, these include cars with up to 8 passenger seats, and private hire vehicles with up to 8 seats.
Is the MOT done on site?: Yes. The test takes place in our own Class 4 MOT bay at our centre at 57 Great North Road, Welwyn Garden City.
What happens if my car fails?: We explain each failure item, with photos where it helps, and give you a written quote for the repairs. No repair starts until you give your written approval.
Can a warning light fail the MOT?: It can. DVSA's MOT inspection manual lists an engine warning lamp that shows a fault as a Major defect on diesels first used from 1 July 2008. If a warning lamp is on, we can diagnose why before the test.
Can I wait while the MOT is done?: Ask when you book whether your job can be done while you wait.