Rear of 924 Victoria Road, West Ryde
Opening hours
COL HARRISONAutomotive

Car Diagnostics in West Ryde

Modern diagnostic equipment for warning lights, electronic fuel injection and hard-to-find faults, with a clear explanation of what we find and what it means.

car diagnostics West Ryde

Diagnostics & EFI you can trust

A warning light does not always mean an expensive repair, but it should never be ignored. Our scan tools read the fault codes stored in your car and, more importantly, our technicians know how to interpret them.

We diagnose the actual cause rather than replacing parts and hoping. You get a straight answer on what is wrong, what it will cost and how urgent it is.

What is included

  • Engine and warning light diagnosis
  • Electronic fuel injection (EFI) faults
  • ABS, airbag and electrical fault finding
  • Battery, charging and starting diagnosis
  • Pre-purchase and intermittent fault checks
  • A plain-language explanation of every fault found

Reviews

Rated 4.7 by West Ryde drivers

4.7 from 39 Google reviews
Great return experience with the team here, they diagnosed the problem, purchased parts and replaced it within 24hrs. Josh is extremely personable and hard working, thank you. The price was very reasonable, 5 star, will be coming back!

Dom Thomson

Google review

Had my Honda HR-V serviced here recently and everything went smoothly. The team was professional, friendly, and explained things clearly. The service was completed on time and the car feels great. Highly recommend this workshop to anyone in the area.

Linan J

Google review

Col Harrison’s are one of the best mechanics I’ve ever encountered. Friendly, professional, prompt and excellent communication. They go that extra step in showing you through diagnostic images and explanation what the repair entailed. Very impressive with great care taken.

Edmond Odishoo

Google review

Our Story

Modern automotive expertise, old-school service

Established in 1989 by Col Harrison, our workshop has looked after West Ryde families and businesses for more than 35 years, built on honest advice, quality workmanship and genuine care.

In 2025 the business entered a new chapter under owner Josh Hallinan, who grew Col’s Body Shop from a small local repairer into one of Sydney’s leading collision businesses. That same focus on systems, customer experience and doing the right thing now drives Col Harrison Automotive.

We do not see ourselves as just mechanics. We are trusted advisors. If a repair can wait, we will tell you. If something does not need doing, we will say so.

Col Harrison Automotive, a Repco Authorised Service workshop in West Ryde
Serving West Ryde since

1989

Serving West Ryde since

Years on the tools

35+

Years on the tools

Makes & models

All

Makes & models

Google rating

4.7

Google rating

Warning light on?

Do not ignore that dash light. Book a diagnostic with the West Ryde team and get a straight answer.

FAQ

Diagnostics & EFI, answered honestly

A steady light usually means you can drive carefully to us, but a flashing light means stop and call. Either way, book a diagnostic soon so a small fault does not turn into a big one.

We connect our scan tool to read the fault codes your car has stored, then our technicians investigate to find the real cause. You get a clear explanation and a quote before any repair.

Yes. Intermittent faults take patience and the right gear, both of which we have. We track down the cause rather than guessing at replacement parts.

We will confirm the cost when you book. A diagnostic often saves you money overall, because it means we repair the actual fault rather than replacing parts on a guess.

We can, but only after we have found and fixed what triggered it. Simply clearing a light without addressing the cause means it will usually come straight back.

Get in touch

Book your car in today

Call us or send an enquiry and we will find a time that suits. You will find the workshop at the rear of 924 Victoria Road.

Monday to Thursday8am to 4:30pm
Friday8am to 4pm
SaturdayBy appointment
SundayClosed

We’ll get back to you the same business day. Prefer to talk? Call (02) 9809 2009.

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