Free Engine Health Test
With Your Service
Book your vehicle service with Grimmer Motors before the 30th June 2026 and receive a free engine health test (worth $238) — including a vehicle scan, relative compression / alternator test, and a service condition report with photos.
* Not all free tests may be able to be run as it depends on your vehicle’s technology.
What’s Included in Your Free Engine Health Test?
Three things bundled free with your service booking — here’s exactly what we do, and what it would normally cost.
$89 value
Vehicle Scan
We read stored fault codes from your vehicle’s computer using our diagnostic scanner — helps identify warning-light issues.
See an example scan report (PDF) →
Note: this is a fault-code scan, not a full vehicle diagnostic.
$149 value
Relative Compression & Alternator Test
Measures cylinder compression balance during cranking — flags potential engine or charging issues without dismantling anything.
Service Condition Report
A written report with photos showing the condition of key components we inspected — so you can see what we see, in plain English. We will also estimate the cost for any recommendations so there are no surprises.
A Health Snapshot for Your Engine and Charging System
These checks aren’t a full mechanical diagnostic — they’re a fast, non-invasive way to flag stored fault codes, cylinder compression imbalance, and charging issues. A useful add-on alongside your regular service.
- Reads stored fault codes — useful if a warning light is on or has been on
- Flags cylinder compression imbalance without removing the spark plugs or diesel engine components
- Checks that your alternator is charging properly and the battery condition during cranking
- Photo report of inspected components, so you can see what we see
Limited-Time Servicing Offer
Everything included, plain English — no fine print surprises.
Book a vehicle service and receive a free engine health test.
- Vehicle scan ($89 value)
- Relative compression / alternator test ($149 value)
- Service condition report with photos
Not sure what’s in a service? See what’s included in our Standard & Premium packages →
Why Choose Grimmer Motors?
Hamilton drivers have trusted us since 1934 for vehicle servicing, diagnostics, repairs, and WOF support.
Local Hamilton Workshop
Conveniently located in Fairfield, Hamilton.
Upfront Estimates
You’ll be told the cost and no extra work will be carried out without your approval.
Experienced Technicians
Vehicle servicing, diagnostics, repairs, and WOF support.
Clear Communication
No surprise repairs. Clear advice you can understand.
Trusted by Hamilton Drivers
What our customers say about their service experience.
Friendly, honest team. They explained exactly what my car needed before doing any work and stuck to the quote. I’ll be back.
Took my ute in for a service and a check engine light. They diagnosed it quickly and gave me a clear plan. Sorted same day.
Great workshop in Fairfield. Fair pricing and they actually call you before doing anything extra. Highly recommend.
Visit Grimmer Motors in Hamilton
Drop in at our Fairfield workshop or get directions below.
Workshop address
998 Heaphy Terrace
Fairfield, Hamilton 3214
New Zealand
Opening hours
| Monday – Friday | 7:30 am – 5:00 pm |
| Weekends | Closed |
Parking: on-site customer parking available; courtesy drop-off bay at the front.
Frequently Asked Questions
Yes — it’s included at no extra cost when you book an eligible paid vehicle service during the offer period.
A vehicle scan and a relative compression test — together these help identify potential engine or fault-code issues without dismantling anything.
No. Grimmer Motors will explain any findings and provide an estimate before carrying out extra repairs.
The offer ends on 30 June 2026.
Yes — use the booking link on this page and the team will confirm a time that works for you.