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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.

  2. Global Diesel Sydney

    Diesel Mechanics

    4 Milton St, Granville NSW 2142

    Directions View profile

    Diesel fuel injection specialist in Granville, NSW, handling injector testing and remanufacturing, diesel pump repairs and parts sales.

    • Injector Testing
    • Injector Remanufacturing
    • Diesel Pump Repairs

    4 Milton StGranville NSW 2142

    Closed · opens 7:30 am

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  3. Grafton Truck Sales & Spares

    Mechanics, Diesel Mechanics

    6 Induna St, South Grafton NSW 2460

    Directions View profile Est. 2000

    Truck and trailer parts and repairs in South Grafton, NSW, also supplying trays, tarps, bullbars, stock crates and batteries.

    • Truck Parts & Repairs
    • Trailer Parts & Repairs
    • Batteries

    6 Induna StSouth Grafton NSW 2460

    Closed · opens 7:30 am

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  4. Griffiths Truck & Trailer Fleet Maintenance

    Diesel Mechanics, Mechanics, Caravan Repairs

    18B Pendlebury Rd, Cardiff NSW 2285

    Directions View profile

    Truck and trailer fleet maintenance workshop in Cardiff, NSW, working on trucks, trailers and heavy vehicles.

    • Truck and bus repairs
    • Trailer servicing and repairs

    18B Pendlebury RdCardiff NSW 2285

    Closed · opens 7:00 am

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  5. Guttler Diesel

    Diesel Mechanics

    Unit 3/238 Schubach St, East Albury NSW 2640

    Directions View profile Est. 2022

    Diesel mechanic in East Albury, NSW for CAT engine work, fuel system reconditioning and machine repairs.

    • CAT Diesel Engine Specialist
    • CAT Fuel System Reconditioning
    • CAT Transmission & Drive Train

    Unit 3/238 Schubach StEast Albury NSW 2640

    Closed · opens 8:00 am

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  6. Hartwigs

    Mechanics, Diesel Mechanics, 4x4

    266 Hammond Ave, East Wagga Wagga NSW 2650

    Directions View profile Est. 1923

    Truck dealer in East Wagga Wagga, NSW, selling new and used trucks and supplying truck parts, with truck servicing.

    • New Trucks
    • Used Trucks
    • Truck Parts

    266 Hammond AveEast Wagga Wagga NSW 2650

    Closed · opens 9:00 am

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  8. Hunter Diesel Service & Maintenance

    Diesel Mechanics, Mechanics

    18 Wanaruah Cl, Wattle Ponds NSW 2330

    Directions View profile Est. 2017

    Mobile heavy diesel mechanic in Wattle Ponds, NSW, servicing and repairing earthmoving, civil, transport and mining machinery, with breakdown help.

    • Heavy Diesel Mechanics
    • Earthmoving Equipment Servicing & Repairs
    • Breakdown Assistance

    18 Wanaruah ClWattle Ponds NSW 2330

    Open now · 24 hours

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  9. Hunter Valley Seat Specialists

    Mechanics, Diesel Mechanics, 4x4

    2/13 Hinkler Ave, Rutherford NSW 2320

    Directions View profile Est. 2006

    Seat and trim specialist in Rutherford, NSW for reupholstery, recovering, custom made seats and repairs.

    • Custom Made
    • Recovering
    • Reupholstery

    2/13 Hinkler AveRutherford NSW 2320

    Closed · opens 8:00 am

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  10. Inland Truck Centres

    Mechanics, Diesel Mechanics

    Newell Hwy, North Dubbo NSW 2830

    Directions View profile Est. 2022

    Truck centre in North Dubbo, NSW for new and pre-owned trucks, truck parts and accessories, and a 24hr break-down service.

    • Truck parts & accessories
    • 24hr break-down service
    • New trucks

    Newell HwyNorth Dubbo NSW 2830

    Closed · opens 8:00 am

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  11. Inland Truck Centres - Orange

    Diesel Mechanics, Mechanics, 4x4

    12 Leewood Dr, Orange NSW 2800

    Directions View profile Est. 2022

    Truck and bus repairs and truck batteries in Orange, NSW, also covering Orange North and the surrounding area.

    • Car batteries
    • Truck and bus repairs

    12 Leewood DrOrange NSW 2800

    Closed · opens 8:00 am

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  12. Inland Truck Centres Wagga Wagga

    Mechanics, Diesel Mechanics

    260 Hammond Ave, Wagga Wagga NSW 2650

    Directions View profile Est. 2000

    Truck dealer in Wagga Wagga, NSW, selling new and used trucks and supplying truck parts.

    • New Trucks
    • Used Trucks
    • Truck Parts

    260 Hammond AveWagga Wagga NSW 2650

    Closed · opens 8:00 am

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  14. J & E Heavy Diesel Mechanic

    Diesel Mechanics, Mechanics

    Thurgoona NSW 2640

    View profile Est. 2020

    Mobile heavy diesel mechanic based in Thurgoona, NSW, servicing trucks and buses, logbook servicing and air conditioning.

    • Diesel Mechanics
    • Logbook Servicing
    • Truck & Bus Repairs

    Thurgoona NSW 2640

    Closed · opens 6:00 am

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  15. J.C. Diesel Tune

    Diesel Mechanics, Mechanics

    11 Bellingham St, Narellan NSW 2567

    Directions View profile

    Diesel engine repair and servicing workshop in Narellan, NSW, looking after diesel vehicles and fleets.

    • Diesel servicing and repairs

    11 Bellingham StNarellan NSW 2567

    Closed · opens 8:00 am

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  18. Jap Truck Spares Pty Ltd

    Diesel Mechanics, Mechanics

    10/80 Seville St, Fairfield East NSW 2165

    Directions View profile

    Truck parts and repair business in Fairfield East, NSW, reconditioning engines, transmissions and differentials for Japanese trucks.

    • Transmission and gearbox repairs

    10/80 Seville StFairfield East NSW 2165

    Closed · opens 9:00 am

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  19. Klaas Diesel Qld

    Diesel Mechanics, Mechanics

    8 Neil St, Gladstone NSW 2440

    Directions View profile Est. 2019

    Diesel mechanic in Gladstone, NSW for logbook servicing, roadworthy certificates, heavy vehicle repairs and dyno tuning.

    • Car and Truck Roadworthy Certificates
    • Log Book Servicing
    • Heavy Vehicle Repairs & Maintenance

    8 Neil StGladstone NSW 2440

    Closed · opens 7:00 am

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  20. Lake Macquarie Marine Services

    Diesel Mechanics, Mechanics

    59 Railway Parade, Blackalls Park NSW 2283

    Directions View profile Est. 2001

    Marine engineers and diesel mechanics in Blackalls Park, NSW, working on boats and outboards around Lake Macquarie.

    • Marine engineers
    • Diesel mechanics
    • European and make specialist servicing

    59 Railway ParadeBlackalls Park NSW 2283

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  21. Lathams Mechanical

    Diesel Mechanics, Mechanics

    156 Industrial Rd, Oak Flats NSW 2529

    Directions View profile Est. 2022

    Diesel and 4x4 mechanic in Oak Flats, NSW, handling truck maintenance and plant maintenance.

    • Truck Maintenance
    • Plant Maintenance

    156 Industrial RdOak Flats NSW 2529

    Closed · opens 7:00 am

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  22. Lovick Engineering

    Diesel Mechanics, Mechanics

    175 March St, Orange NSW 2800

    Directions View profile Est. 2000

    Engine machining and reconditioning workshop in Orange, NSW, rebuilding diesel and gas engines with crankshaft grinding and dyno testing.

    • Diesel Engine Rebuilding & Dyno Testing
    • Crankshaft Grinding & Repair
    • Cylinder Head Reconditioning

    175 March StOrange NSW 2800

    Closed · opens 9:00 am

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  23. Lowes Petroleum BP Grafton

    Diesel Mechanics, Mechanics, 4x4

    13 Orara St, Grafton NSW 2460

    Directions View profile Est. 2022

    Lowes Petroleum BP Grafton is a fuel and diesel fuel injection business in Grafton, NSW, serving Grafton and surrounds.

    • Diesel fuel injection
    • Exhaust, cooling and engine repairs

    13 Orara StGrafton NSW 2460

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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 97–120 of 953 diesel mechanics · filters apply to this page only

Diesel Mechanics by city in New South Wales

Popular suburbs in New South Wales

Diesel Mechanics in other states

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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 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.