MOT Bay Layout and Dimensions
It is fundamental that you make sure your premises are suitable and testing bay sizes are correct for the vehicle classes you'll be testing. Premises, test bays and equipment will be considered suitable if they meet the requirements by the DVSA.
MOT test bays and layout dimensions are measured from the inside wall to the inside wall on each side of the bay. The height of the bay is measured from the floor to the ceiling or the lowest obstruction (such as lights or beams).
Important Measurement Guidelines
MOT Bay Dimensions by Vehicle Class
Class 1 & 2 (Motorcycles)
Class 3, 4, 5 & 7 (Cars & Light Vehicles)
Additional Bay Requirements
Lighting Standards
Adequate lighting must be provided throughout the bay to allow proper inspection of all vehicle components. Minimum illumination levels apply.
Floor Surface
The floor must be level, clean, and free from oil contamination. A suitable surface is essential for accurate testing and safety.
Equipment Space
Sufficient space must be available for all required testing equipment, including brake testers, headlamp aim checkers, and emission testing equipment.
Access and Ventilation
Adequate ventilation systems must be in place to remove exhaust fumes. Bay doors must be of suitable size for vehicle entry and exit.
Inspection Pit or Lift
An inspection pit or vehicle lift is required to examine the underside of vehicles. This must meet specific safety standards.
Key Points to Remember
- Measure accurately: All dimensions must be measured from inside wall to inside wall
- Height clearance: Consider ceiling height and any overhead obstructions like lighting or beams
- Class specific: Different vehicle classes require different minimum dimensions
- Equipment space: Allow additional space beyond minimums for testing equipment
- DVSA approval: Your premises must be inspected and approved by DVSA before testing can commence
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