On-Site MOT Steam Cleaning
Pre-MOT Vehicle Cleaning
MOT steam cleaning is a thorough hot-water clean carried out before a vehicle’s annual test or inspection. It focuses on areas where oil, grease, traffic film and road dirt can build up, including the engine area, chassis and undercarriage.
For HGV operators, pre-MOT cleaning makes these areas cleaner and easier to inspect. It can also be useful before servicing or workshop work where clear access to components is needed.
Mobile Fleetwash provides nationwide on-site pre-MOT steam cleaning for HGVs, trucks, trailers and commercial vehicles, helping remove built-up grease, oil and road grime ahead of inspection.
Preparing for Annual Inspection
Most HGVs in Great Britain need an MOT, also known as an annual test, each year. Tests are carried out by the Driver and Vehicle Standards Agency (DVSA) at authorised testing facilities or DVSA test stations.
Pre-MOT steam cleaning is not itself a legal requirement for every HGV. Operators use it to remove accumulated grease, oil, road dirt and other deposits before the vehicle is presented for inspection.
A cleaner engine, chassis and underside gives workshop teams and inspectors a clearer view of the vehicle and can make preparation for the annual test easier.
MOT steam cleaning can be booked as a one-off service ahead of an inspection or arranged alongside your wider vehicle cleaning schedule.
Pre-MOT cleaning concentrates on the areas that need a deeper clean than a standard exterior vehicle wash. Depending on the vehicle and your requirements, cleaning can include:
Hot water and high-pressure cleaning equipment are used to break down stubborn deposits and wash away accumulated dirt.
Our MOT steam cleaning service can be used for a range of working vehicles, including:
The service can be arranged for an individual vehicle or several vehicles preparing for annual tests or workshop inspections. If you are unsure whether your vehicle or site is suitable, our team can discuss this with you before arranging the clean.
Mobile MOT Steam Cleaning
You do not necessarily need to send the vehicle to a separate cleaning facility before its inspection.
Mobile Fleetwash has specialised mobile cleaning units that can carry out pre-MOT steam cleaning at customer depots, workshops and other suitable operating sites.
Our units are equipped to carry out hot-water cleaning on location. This can make it easier to coordinate the clean with workshop preparation, maintenance schedules and vehicle availability.
Mobile Fleetwash operates more than 160 mobile cleaning units across its wider network, supporting customers at individual sites and across larger nationwide operations.
Arranging Your Clean
Tell us where the vehicle is based, what needs to be cleaned and when the annual test or inspection is planned.
Before attending, we can confirm the vehicle type, site access and the area available for cleaning. If several vehicles need attention, we can also discuss how the work can be organised around your workshop or fleet schedule.
Cleaning can be arranged in the morning, afternoon, evening or at weekends where required.
If your business operates at several depots, pre-MOT cleaning can also be coordinated across multiple locations through our nationwide service.
Let us know of any special requirements you might have so we can ensure you receive the service you want.
Site Requirements
The right working area is important for thorough HGV steam cleaning.
Our specialised vehicles can work with ramps, inspection bays and certain suitable floor areas, depending on vehicle ground clearance and the access available.
Before booking, it helps to know:
We can discuss these points with you before confirming the service. Risk Assessments, Method Statements and COSHH information can also be provided where required.
Wastewater & Clean-Up
MOT steam cleaning can produce wash water containing road dirt, oils, grease and cleaning residues. This needs to be considered when deciding where the work will take place.
Where suitable drainage is unavailable, Mobile Fleetwash can provide wastewater containment. Wash water can be captured during cleaning and reclaimed into onboard tanks for removal and approved disposal where required.
Our team also carries out post-wash clean-up of the working area once the vehicle cleaning has been completed.
This allows pre-MOT steam cleaning to be considered at sites where drainage or runoff needs additional control.
DVSA requires HGVs and trailers to be clean enough for the relevant components to be inspected during the annual test. However, there is no requirement stating that every vehicle must specifically be steam cleaned. Pre-MOT steam cleaning helps remove built-up oil, grease and road dirt from areas such as the chassis, engine area and undercarriage, making them cleaner and easier to inspect.
Pre-MOT cleaning commonly focuses on the engine area, chassis and undercarriage, along with other accessible areas where grease, oil and road dirt have accumulated. The exact cleaning specification can be agreed before the visit.
Yes, where the site is suitable. Mobile Fleetwash uses specialised mobile cleaning units and can carry out HGV steam cleaning at depots, workshops and operating sites across the UK.
Yes. HGVs, tractor units, rigid trucks, trailers and other suitable commercial vehicles can be included during the same visit.
The timing should leave enough time for the vehicle to be prepared appropriately before testing. DVSA specifically advises that steam cleaning a vehicle’s brake system immediately before a brake test can reduce brake performance, so this needs to be taken into account when scheduling the work.
Yes. Wash water can be captured during cleaning, reclaimed into onboard tanks and removed from the site for approved disposal where suitable drainage is unavailable.
Yes. MOT steam cleaning can be arranged for a single vehicle or several vehicles, as well as being incorporated into a wider scheduled fleet cleaning service.
Who We Work With
Mobile Fleetwash works with a wide range of transport, logistics, delivery and retail businesses across the UK. Our customers include well-known names such as DHL, Maritime, DPD, Sainsbury’s, EVRi, DX Freight, Tesco and Amazon.
Customers continue to work with Mobile Fleetwash because they can rely on a consistent service, regular cleaning schedules and teams that turn up when expected. We work hard to keep standards high across every visit.
Request a Quote
Tell us about your vehicles, site location and preferred cleaning schedule. Our team can discuss your requirements and arrange a service that works around your availability.
Unit 3-4 Upminster Trading Park Warley Street, Upminster, Essex RM14 3PJ
Rear of 31 South Parade, Ossett,
West Yorkshire WF5 0EF
