VEHICLE DIAGNOSTIC
SPECIALISTS — FAST, ACCURATE,
LOCAL IN AUCKLAND

Identify faults quickly with professional vehicle diagnostics, engine fault finding and electronic system testing. Simms Diesel provides diagnostic services for diesel vehicles, light commercial, trucks, machinery and equipment across Auckland and Northland.

BOOK A DIAGNOSTIC

VEHICLE DIAGNOSTIC SPECIALISTS

EXPERIENCED DIAGNOSTIC TECHNICIANS

Title

We diagnose engine faults, warning lights and performance issues across diesel vehicles, light commercial, trucks, machinery and equipment.

ADVANCED DIAGNOSTIC EQUIPMENT

Title

Our diagnostic tools allow us to read fault codes, test sensors, check fuel systems and identify problems quickly and accurately.

FLEET & COMMERCIAL SUPPORT

Title

We understand downtime costs money. Our diagnostic process helps identify faults quickly so repairs can be completed faster and vehicles returned to work.

ACCURATE VEHICLE FAULT FINDING

Title

Proper diagnostics ensures the correct problem is identified before parts are replaced, saving time and unnecessary repair costs.

WARNING LIGHT ON?
LOSS OF POWER OR RUNNING ISSUES?

Vehicle faults can appear as warning lights, loss of power, starting problems or poor engine performance. Our diagnostic equipment allows us to identify engine, fuel system and electronic faults quickly so the correct repair can be carried out without unnecessary parts replacement.

Common signs your vehicle may need diagnostic testing:

Engine warning light on dashboard.

Loss of power or poor performance.

Hard starting or no start.

Excessive smoke or fuel consumption.

Rough idle or engine misfire.

BOOK A VEHICLE
DIAGNOSTIC TEST

TYPICAL RESPONSE TIME: SAME BUSINESS DAY

NO-OBLIGATION ASSESSMENT

EXPERIENCED DIESEL TECHNICIANS

AUCKLAND WORKSHOP

Tell us your vehicle, engine type and symptoms — we’ll diagnose the fault and recommend the most cost-effective repair solution.

Thanks for contacting us. We'll get back to you as soon as possible.

FREQUENTLY ASKED QUESTIONS

Clear answers to common questions about vehicle diagnostics, engine fault finding and diagnostic testing.

How long does a vehicle diagnostic take?

Most diagnostic inspections take between 1–2 hours depending on the fault and vehicle type. More complex faults may require further testing, which we will discuss with you before proceeding.

What does a diagnostic test include?

A diagnostic test includes scanning for fault codes, checking sensors and electronic systems, testing fuel and engine systems, and identifying the cause of warning lights or performance issues.

Can diagnostics identify the exact fault?

In most cases diagnostics can identify the faulty system or component. Additional testing may sometimes be required to confirm the exact cause before repairs are carried out.

Where is your workshop?

You’re welcome to visit our Auckland workshop and showroom at:

77 Leonard Road, Penrose, Auckland 1060
 
We also support courier repairs nationwide.
 

Do you repair faults after diagnosing?

Yes, once the fault is identified we can provide a quote and carry out the necessary repairs if required.

What are common signs my vehicle needs diagnostics?

Common signs include warning lights, loss of power, starting problems, poor fuel economy, rough running, smoke or unusual engine behaviour.

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YOU NEED?

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