• Comprehensive servicing for all vehicles
  • Trusted by Toowoomba locals
  • Over 25 years of experience in vehicle maintenance & repair
Family Business Icon

Family-Owned & Operated

Experience Icon

25+ Years of Experience

Trailer Specialist Icon

Comprehensive Service Range

Mechanic Icon

Trusted Toowoomba Mechanic

Request a Call Back

A person is charging a car battery with jumper cables. — Bob Best Mechanical in Drayton, QLD

Toowoomba Car Diagnostics & Repairs

When your vehicle isn’t performing as it should, Bob Best Mechanical offers trusted general repairs and accurate car diagnostic services right here in Toowoomba. Our workshop is fully equipped to assess and repair mechanical faults across all makes and models, from warning lights and error codes to performance issues and drivability concerns.


We use advanced scan tools to identify faults quickly, so we can provide the right repair solution without unnecessary delays. Whether it’s a one-off issue or a recurring mechanical fault, our team will get to the root of the problem and get you back on the road with confidence.


Choose Bob Best Mechanical for clear answers and reliable service.


Call (07) 4632 2295 to book your car diagnostic and repair today. We also repair suspensions and brakes.

Reliable Repairs, Expert Service

Focusing on Reliability & Comfort

Bob Best Mechanical takes the guesswork out of fault finding with comprehensive car diagnostic services backed by over 25 years of experience. Our process is efficient, transparent, and focused on long-term reliability.


We don’t just read the codes—we interpret them accurately and match them with what’s happening under the bonnet. From small issues to complex faults, we’re committed to getting it right the first time.


What sets our diagnostics apart:


  • Modern diagnostic scan tools
  • Accurate fault code interpretation
  • Clear explanations before any repairs
  • Fast turnaround on most repairs
  • Experienced mechanics you can rely on


Whether it’s a performance issue, strange noise, or dashboard light—Bob Best Mechanical has it covered.


Book a car diagnostic with our trusted team today.

A person is working on the radiator of a car. — Bob Best Mechanical in Drayton, QLD

Frequently Asked Questions

  • What does a car diagnostic check involve?

    A car diagnostic check involves scanning your vehicle’s onboard computer system to identify fault codes linked to various components. This process can detect issues with the engine, transmission, brakes or sensors. The scan tool reads error codes and provides detailed information to help pinpoint the cause of a warning light or performance issue, allowing for quicker and more accurate repairs.

  • How do I know if my car needs diagnostics?

    You may need a diagnostic check if warning lights appear on your dashboard, your engine is running rough or you're experiencing reduced performance. Strange noises, unusual exhaust smoke or poor fuel economy are also signs. Diagnostics help identify the underlying issue early, preventing further damage and costly repairs by addressing the root cause rather than just the symptoms.

  • Can a diagnostic check fix the problem?

    A diagnostic check itself doesn’t fix the issue—it identifies what’s wrong. Once the fault is located, a technician can recommend and carry out the appropriate repairs. The scan provides insight into what component or system is malfunctioning, ensuring that any repairs are based on clear data which saves time and avoids replacing parts unnecessarily.