Glossary
DPF
A Diesel Particulate Filter (DPF) is a filter fitted to diesel exhausts to reduce soot emissions.
DPF cleaning and regeneration is a real workshop service, especially in cities with short-journey diesel usage. It's an MOT failure item too.
More glossary terms
MOT
The MOT is the annual UK roadworthiness test for vehicles over 3 years old. Here's what it means for a garage.
Class 4 MOT
Class 4 covers most cars and light vans up to 3,000kg. Here's how it affects workshop scheduling.
Class 7 MOT
Class 7 covers goods vehicles between 3,000kg and 3,500kg. Here's what it means for a garage.
DVLA
The DVLA is the UK's driver and vehicle licensing agency. It's the source of truth for reg-based data.
DVSA
The DVSA regulates MOT testing and vehicle standards in the UK. It's the rule-maker your MOT bay follows.
Workshop bay
A workshop bay is one work area — usually a lift or a floor space — that can hold one vehicle at a time.