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Bus & Coach Repair and Diagnostics

DIAGTEST is a North East based repair service specialising in bus and coach mechanical, electrical and diagnostics, with fully trained Technicians providing comprehensive solutions for all our customers, large or small we can tailor our services to meet your business and operational needs.

  • Technical assistance and general repair
  • Harness supply and manufacture
  • Latest vehicle diagnostics
  • Training courses in mechanical & electrical systems

Maintenance & Repairs


DIAGTEST can repair or replace any item in your bus or coach and carry out extensive electrical or mechanical repairs and diagnostics. 

We work with many vehicle opperators across the country such as Go-North East, Arriva North East, National Express & Stagecoach.  

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Design & Production


DIAGTEST can rewire any vehicle and supply replacement harnesses for engines, gearboxes and chassis and whats more harnesses can be designed specifically for any modification you may require.

We can design and manufacture electronic devices to overcome issues with vehicle batches/types such as CAN throttle systems to a complete multiplex overhaul.

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