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Describe the job once and we'll match it with up to 3 diesel mechanics in New South Wales.

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Diesel Mechanics in New South Wales

953 diesel mechanics★ 4.7 average from 1,588 reviews

About these results

Diesel mechanics by rating, then related trades.

A business is Featured only when it holds our Featured plan; Featured is a listing plan, not a rating.

953 diesel mechanics in New South Wales; listings updated 7 Oct 2026.

  3. Aztech Group

    Diesel Mechanics, Mechanics, Auto Electricians

    12 Borthistle Rd, Gunnedah NSW 2380

    Directions View profile Credentials listed Est. 2011

    Earthmoving and agriculture repair business in Gunnedah, NSW, for workshop rebuilds, field service and breakdown repairs.

    • Workshop rebuilds & repairs
    • Field service repairs
    • Heavy and light vehicle safety Rego insp…

    12 Borthistle RdGunnedah NSW 2380

    Closed · opens 7:00 am

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  4. Advanced Automotive

    Diesel Mechanics, Mechanics, 4x4, Tyres

    73 Muldoon St, Taree NSW 2430

    Directions View profile Credentials listed Est. 2022

    Heavy vehicle mechanic in Taree, NSW for truck repairs, car servicing, tyre fitting and balancing, and spare parts.

    • Truck Repairs
    • Car Servicing
    • Tyre Fitting

    73 Muldoon StTaree NSW 2430

    Closed · opens 8:00 am

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  5. Agri Repairs Pty Ltd

    Diesel Mechanics

    133 Coal Rd, Muswellbrook NSW 2333

    Directions View profile

    Mobile diesel mechanic in Muswellbrook, NSW for diesel engine repairs and rebuilds, agricultural machinery and heavy equipment.

    • Mobile Truck Repairs & Servicing
    • Advanced Diagnostics
    • Engine Rebuilds

    133 Coal RdMuswellbrook NSW 2333

    Closed · opens 6:00 am

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  6. Apa Diesel Engines Recondition

    Diesel Mechanics

    5 Yennora Ave, Guildford NSW 2161

    Directions View profile

    Diesel engine reconditioning specialist in Guildford, NSW, rebuilding engines and modifying injection pumps and injectors.

    • Engine reconditioning
    • Injection pump boost compensator modific…
    • Turbo charging diesel engines

    5 Yennora AveGuildford NSW 2161

    Closed · opens 8:00 am

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  7. Baileys Diesel Group

    Diesel Mechanics

    244 Nolan St, Unanderra NSW 2526

    Directions View profile Est. 2022

    Diesel fuel injection specialists in Unanderra, NSW, remanufacturing injectors and pumps and servicing rail, mining and transport fleets.

    • Diesel injectors
    • Fuel Injection System Services
    • Turbocharger & Air Charging Services

    244 Nolan StUnanderra NSW 2526

    Closed · opens 8:00 am

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  8. Better Truck Repairs

    Diesel Mechanics, Mechanics

    110 Mileham St, South Windsor NSW 2756

    Directions View profile

    Truck and bus repair business in South Windsor, NSW, also offering breakdown assistance across the surrounding area.

    • Truck and bus repairs

    110 Mileham StSouth Windsor NSW 2756

    Closed · opens 7:00 am

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  9. Bidgee Diesel Tuning

    Diesel Mechanics, Mechanics, Auto Electricians, 4x4, Tyres

    3/385 Edward St, Wagga Wagga NSW 2650

    Directions View profile Credentials listed Est. 2014

    Diesel tuning workshop in Wagga Wagga, NSW for dyno tuning, ECU remapping and performance upgrades.

    • Dyno tuning
    • ECU Remapping
    • Performance Upgrades

    3/385 Edward StWagga Wagga NSW 2650

    Closed · opens 8:00 am

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  11. Brown & Hurley Group

    Mechanics, Diesel Mechanics

    Cnr Hurley Drv & Pacific Hwy, Coffs Harbour NSW 2450

    Directions View profile Est. 2022

    Truck sales and service business in Coffs Harbour, NSW, selling new Kenworth and DAF trucks, used trucks and trailers, with a workshop.

    • New Trucks
    • New Kenworth & DAF Truck Sales
    • Used Truck Sales

    Cnr Hurley Drv & Pacific HwyCoffs Harbour NSW 2450

    Closed · opens 7:00 am

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  12. Brown & Hurley Group Pty Ltd

    Mechanics, Diesel Mechanics

    266 Summerland Way, Kyogle NSW 2474

    Directions View profile Est. 2000

    Truck and bus repair business in Kyogle, NSW, also supplying new and used trucks and truck equipment and parts.

    • Truck and bus repairs

    266 Summerland WayKyogle NSW 2474

    Closed · opens 8:00 am

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  15. CB Diesel

    Diesel Mechanics

    23 Scott Pl, Orange NSW 2800

    Directions View profile

    Diesel and machinery workshop in Orange, NSW for agricultural, civil and mining equipment servicing, component rebuilds and diagnostics.

    • Agriculture Servicing, Repairs & Mainten…
    • Component Rebuilds
    • Diagnostic Services

    23 Scott PlOrange NSW 2800

    Closed · opens 8:00 am

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  17. Canobolas Diesel & Turbo

    Diesel Mechanics, Mechanics, 4x4

    3/99 Elsham Ave, Orange NSW 2800

    Directions View profile Credentials listed Est. 1998

    Diesel and turbo specialist in Orange, NSW for diesel fuel injection, turbocharger servicing and dyno tuning.

    • Turbocharger Servicing
    • Injection Pump Reconditioning
    • Diesel & Common Rail Injector Servicing

    3/99 Elsham AveOrange NSW 2800

    Closed · opens 8:00 am

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  18. Carbon Jet

    Diesel Mechanics

    5-7 Malta St, Fairfield East NSW 2165

    Directions View profile Est. 2024

    Mobile DPF cleaning service in Fairfield East, NSW, for DPF diagnostics, cleaning and regeneration on diesel vehicles.

    • DPF Cleaning
    • Mobile DPF Cleaning
    • DPF Diagnostics

    5-7 Malta StFairfield East NSW 2165

    Open now · 24 hours

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  20. Cirrus Power Systems

    Diesel Mechanics, Mechanics

    25 Girling St, Islington NSW 2296

    Directions View profile

    Power systems workshop in Islington, NSW, specialising in gas reciprocating engines, overhauls and in-situ machining.

    • Exhaust, cooling and engine repairs

    25 Girling StIslington NSW 2296

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  21. Coastal Truck Services

    Diesel Mechanics, Mechanics

    12a Burnet Rd, Warnervale NSW 2259

    Directions View profile

    Truck and bus repairer in Warnervale, NSW, handling heavy vehicle servicing, diagnostics and breakdown recovery.

    • Truck and bus repairs

    12a Burnet RdWarnervale NSW 2259

    Closed · opens 6:00 am

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  22. Coffs Coast Hydraulics & Diesel Services

    Diesel Mechanics, Mechanics

    North Boambee Valley NSW 2450

    View profile Credentials listed Est. 2020

    Hydraulic hose and diesel specialists in North Boambee Valley, NSW, also handling heavy earthmoving and truck repairs.

    • Diesel repairs
    • Heavy earthmoving & truck repairs
    • Hydraulic hose repairs & fabrications

    North Boambee Valley NSW 2450

    Closed · opens 7:00 am

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  23. Coffs Coast Hyundai Truck & Bus

    Mechanics, Diesel Mechanics

    1 Elswick Pl, Coffs Harbour NSW 2450

    Directions View profile Est. 2022

    Hyundai truck dealer in Coffs Harbour, NSW, selling new and used trucks, cab chassis and tippers, with parts and workshop servicing.

    • Trucks
    • Cab Chassis
    • Tipper Trucks

    1 Elswick PlCoffs Harbour NSW 2450

    Closed · opens 8:00 am

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  24. Coffs Coast Iveco

    Mechanics, Diesel Mechanics

    3 Elswick Pl, North Boambee Valley NSW 2450

    Directions View profile Est. 2022

    Iveco truck dealer in North Boambee Valley, NSW, selling new and used trucks and supplying parts, with servicing in its workshop.

    • Trucks Sale

    3 Elswick PlNorth Boambee Valley NSW 2450

    Closed · opens 8:00 am

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No diesel mechanics on this page match all of these filters. Untick one, or clear the filters to see all 24 on this page.

Showing 49–72 of 953 diesel mechanics · filters apply to this page only

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Not sure which diesel mechanic to call?

Tell us about the job and we'll match it with up to 3 diesel mechanics in New South Wales. Your contact details go only to businesses on a paid plan here, and after you send we tell you which businesses got them. Free, no obligation.

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Choosing diesel mechanics in New South Wales

Diesel mechanics for diesel servicing and repairs, injectors and fuel systems, DPF cleaning and truck repairs. Mechanics Directory lists 953 diesel mechanics in New South Wales. Listings show the services each business offers, and a rating where there is one.

What to check before you book

Getting started

  1. Describe the job. Your vehicle's make, model and year, what's wrong or what it needs, and when you need it done.
  2. Shortlist two or three. Use the filters above to narrow this page by listed credentials and website.
  3. Compare quotes. Or send one request and we'll match it with up to 3 diesel mechanics.
  4. Agree in writing. Confirm the price, what's included and when the vehicle will be ready before work begins.

Frequently asked questions

How do I choose between diesel mechanics in New South Wales?

Compare two or three. Ask whether they work on your make, and on light vehicles, trucks or machinery, whether they can come to you, and for a written quote for parts and labour. A business that is owner verified on Mechanics Directory has confirmed it runs the listing.

How much does a diesel service cost in New South Wales?

It depends on the vehicle or machine, the oil and filters it takes, and whether the injectors, turbo or DPF need work. Asking two or three local diesel mechanics for a written quote is the quickest way to see the going rate in New South Wales.

Do diesel mechanics need to be licensed?

Licensing depends on the work and the state. Modifications such as GVM upgrades need certifying under your state's rules, and outside Western Australia and the Northern Territory, modifications to heavy vehicles over 4.5 tonnes are regulated by the National Heavy Vehicle Regulator. In New South Wales, a business that repairs vehicles needs a motor vehicle repairer licence from NSW Fair Trading, and the people doing the work generally need a tradesperson certificate (some minor work is exempt). You can check a licence on the NSW Government's online licence check. In New South Wales, autogas (LPG) work is regulated under the Gas and Electricity (Consumer Safety) Regulation 2018; ask for the autogas licence. Listings marked "Credentials listed" show a licence, accreditation or membership on the business's profile. We don't check it, so confirm it with whoever issued it.

What is DPF cleaning?

A diesel particulate filter (DPF) traps soot from the exhaust and burns it off on longer runs at highway speed. Lots of short trips can stop that happening, so the filter blocks and a warning light comes on. A diesel mechanic can check the filter and clean it or run a forced regeneration.

What does "serves this area" mean?

Some businesses are based in a nearby suburb but cover this area, including mobile mechanics and towing services that come to you. On suburb pages we list businesses based in the suburb first, then the ones that say they serve it.

How do free quotes work?

Tell us about the job once. We match your request with up to 3 diesel mechanics near you. A business on a paid plan here gets it with your name and contact details and can contact you directly. A business on the free plan sees the job and your suburb but not your details, so it can't contact you unless it upgrades. A business that hasn't claimed its listing sees your request only once it claims. After you send, we tell you which applies to each business. It's free and there's no obligation.