Mon – Fri: 8:30am – 5:30pm | Sat & Sun: Closed South East England
jsmdiagnostics@gmail.com 07711 934 905

Our Services

Ideal as a top-up between full services. Covers all the key fluid and safety checks to keep your vehicle running reliably.

  • Oil & filter change
  • New sump plug & washer
  • All levels checked, topped up as required & screen wash added
  • Vehicle inspection & general check over
  • Battery health check
  • Full diagnostic health check, report & service light reset
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JSM Diagnostics attending a mobile vehicle service at a customer's home

A comprehensive service covering everything in the Intermediate Service, plus full filter replacement tailored to your engine type. Recommended annually or at your manufacturer's stated service interval.

  • Everything included in the Intermediate Service
  • New air filter
  • New pollen/cabin filter
  • New fuel filter (diesel engines & some petrol engines)
  • New spark plugs (petrol engines)
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JSM Diagnostics carrying out a full vehicle service

Why Choose JSM

Castrol

Castrol Certified

Castrol Certified Mobile Mechanic, using quality Castrol oils and fluids on every service.

30+ Years Experience

Fully qualified technician with decades of hands-on experience across all makes and models.

OEM Quality Parts

OEM or OEM-equivalent parts throughout: the same standard as a main dealer, without the main dealer price.

Fully Insured Ltd Company

JSM Diagnostics Ltd is fully insured and operates as a limited company for complete peace of mind.

Red Range Rover Sport with bonnet open attended by JSM Diagnostics mobile technician

Common Questions

Everything you need to know about mobile servicing with JSM

Most services take between 1.5 and 2.5 hours depending on the vehicle and the work required. You'll be given a more accurate time estimate when you book.

You don't need to be present throughout, but we do ask that someone is available at the start to hand over the vehicle and keys, and at the end to go over any findings. Many customers simply leave us to it while they work from home.

As a Castrol Certified Mobile Mechanic, we exclusively use Castrol's professional-grade engine oils, matched precisely to your vehicle's manufacturer specification. Castrol oils are trusted by vehicle manufacturers worldwide and are the same quality you'd find in a main dealer workshop. Alongside Castrol oils, we use OEM or OEM-equivalent filters and parts throughout. The correct grade and specification is always used, never a generic substitute.

Unfortunately we are unable to fit customer-supplied parts. Our insurance requires that all parts are sourced and supplied by us, and it also allows us to ensure that everything fitted to your vehicle meets the quality and safety standards we work to.

We recommend following your vehicle manufacturer's service schedule, typically every 12 months or every 10,000 to 12,000 miles, whichever comes first. Some modern vehicles with variable service intervals may go longer; your handbook will confirm the intervals for your specific model.

Yes, the service indicator is reset as standard at the end of every service using our professional diagnostic equipment. This includes vehicles with complex service reminder systems such as BMW CBS, VAG service intervals, and Mercedes ASSYST.

Ready to Book?

Mon – Fri: 8:30am – 5:30pm |
Sat & Sun: Closed

Quick Message

Call us: 07711 934 905
Mon – Fri: 8:30am – 5:30pm