Play Detectors - MOT-Approved Steering & Suspension Testing Equipment

Play detectors are an essential part of any MOT Bay or vehicle inspection facility. At JHM Butt, we supply a high-quality range of MOT-approved play detectors for Class 4, Class 7 and commercial vehicle testing, helping workshops carry out fast, compliant and accurate steering and suspension checks.

What Are Play Detectors?

Play detectors are specialist diagnostic tools used during MOT tests to identify wear, weakness or excessive movement in a vehicle’s steering and suspension components. By applying controlled lateral and longitudinal forces to a stationary vehicle’s wheels, the play detector exposes any play that may not be visible during a standard visual inspection.
They help testers quickly spot faults such as:

• Worn suspension joints

• Loose steering components

• Bush deterioration

• Ball-joint play

This ensures a precise and reliable MOT assessment for every vehicle tested.

Why Play Detectors Are Essential for MOT Compliance

Having the right play detector is critical for any MOT-approved workshop or Authorised Testing Facility (ATF). These machines:

• Ensure full DVSA compliance

• Reduce the risk of overlooked faults

• Improve testing accuracy and safety

• Speed up the MOT inspection process

• Contribute to safer vehicles on the road

Accurate play detection helps protect drivers, passengers and road users by ensuring only fully roadworthy vehicles pass through your MOT lane.

Our Range of Play Detectors

Our carefully selected range includes options suitable for cars, vans, light commercial vehicles and heavy-duty HGVs.

• Commercial Vehicle Play Detectors: Built for the demands of large fleets and heavy-duty use, these units are designed to withstand the weight and axle loads of commercial trucks and buses. Ideal for DVSA-approved commercial testing.
• Play Detectors for ATF Applications: These models meet the standards required for Authorised Testing Facilities, offering reliable performance, full compliance and long-term durability for busy commercial MOT centres.
• Play Detectors for Class 4 & 7 MOT Testing: Perfect for standard MOT bays, these versatile play detectors are designed for testing passenger vehicles, vans and light commercials with accuracy and efficiency.

Commonly Asked Questions

How often should a play detector be calibrated?

Calibration should be carried out at regular intervals to maintain accuracy. Service frequency varies by model and usage, and our team can advise on the correct schedule for your equipment.

What’s the difference between play detector types?

The main differences relate to load capacity, plate size and the type of vehicles they’re designed to handle from passenger cars to heavy HGVs.

Can play detectors be used outside of MOT testing?

Yes. Play detectors are also used for diagnostics, general inspections and preventative maintenance, making them a valuable addition to any workshop.

Why Choose JHM Butt for Your Play Detector?

For over 50 years, JHM Butt has supplied professional garage equipment to MOT Bays and testing facilities across the UK. We offer:

• DVSA-compliant play detectors

• Expert installation and setup

• Ongoing servicing and calibration support

• Guidance on selecting the right equipment for your MOT Bay

By choosing JHM Butt, you’re investing in reliable, accurate and long-lasting play detector technology that enhances your workshop’s efficiency and reputation.