HM Auto Electrical | Automotive repairs and WOF registration, Auto Electrical Services Including Fit-outs, Repairs and diagnostics, Air-conditioning, Battery's, Electrical harness upgrades & Braiding. Our auto electricians and mechanics service the whole of Christchurch and Canterbury NZ.

Automotive Repair & WOF

If you want the quality you would expect from the dealership, but with a more personal and friendly atmosphere, you've found it.

Auto Electrician Christchurch

OEM Electrical harness upgrades • Harness braiding • Diagnostics • Servicing • Air-conditioning - service & repair • Batteries • Lights • Harness design • Electrical repairs • Mechanical repairs • Accessories

Agriculture | Transportation |  Marine

Lights, Alarms, Stereos, Batteries, Trailer Plugs, Dual Battery Systems, Solar Panels, Brake Controllers & even GPS Systems

Auto Electrical Services

Auto Electrician Christchurch

We have invested in all the latest auto electric specialist tools and diagnostic software that is specifically tailored for the software in your vehicle. You won't find a better auto electrician Christchurch.
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Car Mechanic | WOF

Car Mechanic Christchurch

Our automotive repair shop located in Rolleston, Christchurch is capable of servicing a variety of cars, jet boats, race cars and classic cars. Our car mechanics will only do the work that is needed to fix your problem.
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Mobile Auto Electrician

Mobile Automotive Repair Christchurch NZ

Our mobile auto electrician Christchurch can do repairs on-site from our vehicles. Our car mechanics can provide workshop repairs, we also have a loan car!
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Electrical Accessories

Auto Electrical Services for Accessories

We can provide auto electrical services for any extra special and custom systems you have installed in your car such as your GPS. Our auto electrician Christchurch will fix it.
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Harnesses Wiring

Harnesses Wiring Auto Electrical Services Christchurch NZ

We have specialized auto electrical services to custom edit your cars wiring harness. We have a custom braiding service for even classic cars. Find out more about your cars harness below:
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Agriculture | Transportation

Agriculture & Transportation repairs and maintenance Christchurch NZ

To manage and maintain your fleet, we have a wide range of diagnostic tools and equipment that can be used on a wide range of machines from truck, trailer, ABS, EBS, SRS to custom machinery.
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Marine Electronics

Marine Electronics Car Mechanic

We provide auto electric and mechanic services for small pleasure craft. From electrical accessories to full re-wires. Our auto repair shop is capable of servicing a variety of models of craft
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Great attitude and high standard of work.

Muddy Mudflap | FACEBOOK | 5 Stars

Had starting issues, so got HM to come out to my place and check it over. What I thought was a minor spark issue was a potentially major problem, after getting it sorted in the workshop I got some extra things done that were pointed out to me, saving me hassles later in the year. Very happy with the car now!!

Tim Wilson | FACEBOOK | 5 Stars

Great, friendly service with fast and clear communication.

Rhian Kay | FACEBOOK | 5 Stars

Underway with third rewire here! Does a bloody good job wouldn’t go anywhere else, nothing is a problem attitude

Ash Mcconchie | FACEBOOK | 5 Stars

A+ service and electrical repairs on my truck, on point diagnosis, fast and reliable.

Marcus Lord | FACEBOOK | 5 Stars

Why Choose us?

  • The Best Materials

    We have invested in all the latest specialist tools and diagnostic software that is specifically tailored for the software in your vehicle.

  • Professional Standards

    Our auto repair shop is capable of servicing a variety of models. We only do the work that is needed to fix your problem.

  • Every Job is Personal

    If you want the quality you would expect from the dealership, but with a more personal and friendly atmosphere, you have found it.

  • Mobile Electrical

    We can come to you for auto electric problems or repairs we can do from our vehicles

Electrical Automotive Repair Service

Diagnostics, Electrical repairs, Harness Design/Braiding, Harness/Loom, Upgrades, Alternators, Starters, EBS/ABS

Auto Diagnostics Christchurch

Auto Diagnostics

Fast and efficient diagnoses and automotive repair of auto electrical problems with high tech, computerized equipment. We can come to you, or your workplace, to diagnose/repair any auto electrical issues.

Auto Electrical Repairs Christchurch

Auto Electrical Services

Experts In auto electrical services. We have a range of services and Christchurch's best rates. Diagnostic Scan, repair of faulty electronics and battery check.

Harness Design Braiding New Zealand

Harness Designing Braiding

Our car mechanic offers a custom made loom braiding service. Labeling machine - Wire harness loom, design and fabrication of wiring harnesses.

Harness loom Christchurch Canterbury NZ

Harness Loom

We can provide any of the following for your wiring loom services. Automatic cutting, stripping, crimping, labeling, braiding, source replacement connectors and more.

AUto Electrical upgrades Christchurch

Auto Electrical Upgrades

We use the latest in components to upgrade the performance of your vehicle's systems.  Plus fixes for under powered electrical systems: a capacitor, a high output alternator, dual battery systems, fitted with smart battery chargers

Alternator Starter Motors

Alternators & Starter Motors

When you get your starter motor or alternator repaired or replaced with us, you can expect excellent customer service, reliability and quality.

EBS and ABS Braking and stability systems Christchurch


We have solutions for EBS and ABS braking system components diagnostic service and repairs. Leading ABS, EBS providers in Christchurch.


Mechanical Pro Service & Repairs

Car Mechanical Servicing, Brakes, Steering and Suspension, Cam belts, Air-Conditioning Servicing and Repairs

Auto Servicing Christchurch

Auto Servicing (Basic & Comprehensive)

Car Servicing. Maximize the lifespan and value of your vehicle with regular servicing at HM Auto. We know cars - book a service with us.

  1. Basic Car Service
  2. Comprehensive
Break Repairs Christchurch


Comprehensive car mechanic service to make sure your braking systems are working optimally for safety and vehicle performance. Car brakes are one of the most important vehicle systems so regular brake repair and maintenance work is essential.

Steering and Suspension Repair Christchurch

Steering and Suspension

HM Auto mechanics are the expert in automotive repair for suspension, shocks & steering when it comes to your car, truck or farm equipment.

Cam belt repair Christchurch


Our car mechanic offers cam belt replacement including a check of the following; power-steering belt, air-conditioning belt, alternator belt, auto tension, cam belt idlers, external condition of a water pumps oil seals.

Car Air Con Christchurch

Car Air-Conditioning
Servicing and Repairs

Air conditioning issues can be either electrical or mechanical. Servicing & Gassing Air conditioning should be done as part of a regular servicing. Our car mechanic can also install new air conditioning units in most vehicles.


Buy Electrical Accessories

Lights, Alarms, Stereos, Batteries, Trailer Plugs, Dual Battery Systems, Solar panels, Brake controllers, GPS

Car Lights Christchurch

Car Lights

We can supply, fit and service car lights! From flashing beacons, work lights to interior lights we can meet your needs
Car Stereos

Car Stereos

We fit and install custom car stereos
Car Alarms Christchurch

Car Alarms

We supply, fit and install car alarms

Car Trailer Plugs

We supply and install trailer plugs
Solar Panels Christchurch NZ

Battery's & Dual Battery Systems

We supply, install and provide automotive repair dual battery systems


Solar Panels

We provide auto electrical services for solar panels & charging system for vehicles, trailers, trucks, motor homes

Brake Controllers Christchurch NZ

Brake Controllers

We supply and install trailer brake controllers
GPS systems Christchurch NZ


We supply and install GPS systems for cars trucks and boats

Partners & Associates