
Book an MOT with Windmill Garage today.
Class IV testing for cars, light vans and small minibuses, including diesel emissions testing. Please check your MOT certificate to see the earliest date you can test before booking.
What you book
Class IV, cars, light vans and small minibuses.
One clear price, the test done by our expert, and a free re-test should your vehicle fail first time.
Diesel testing
Why we test for smoke emissions.
As part of the MOT test your vehicle will be checked for smoke emissions. This helps the environment by minimising pollution and testing the fuel efficiency of your vehicle. It also helps you, by checking that the engine is working correctly and reducing wasted fuel.
The test has been developed so that it should not damage your engine. The tester will check the maintenance history of your vehicle by asking you some questions. The tester must refuse to test your vehicle if he thinks the smoke test will damage your engine.
Important
Please tell the tester if you think the smoke test may damage your engine.
Before your test
Reduce the risk, increase the chance of passing.
- 01Keep it maintained
Keep your vehicle maintained at all times.
- 02Replace the cam belt on time
Have the camshaft drive belt replaced at the recommended intervals.
- 03Arrive warmed up
Go for the test with a fully warmed-up engine, it produces less smoke and is safer to test.
- 04Leave the governor alone
Do not tamper with governor settings. They are set to help the engine run efficiently.
The MOT test
How the diesel test is carried out.
After checking the oil temperature to ensure the engine is warm, the tester accelerates the engine from idle until the governor cuts in, a maximum of six times. Your engine is not held at full speed for any length of time. If your engine has been maintained, the test should not cause any damage.
Visit us
Opening hours & where to find us.
Opening hours
- Mon08:30 – 17:00
- Tue08:30 – 17:00
- Wed08:30 – 17:00
- Thu08:30 – 17:00
- Fri08:30 – 17:00
- SatClosed
- SunClosed
249 London Road, Horndean, Waterlooville, Hampshire, PO8 0HW

Real-time booking diary
Book your MOT
in under a minute.
Check your certificate for the earliest date you can test, then choose a slot from our live diary, 24 hours a day, seven days a week.