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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.

  1. Coles Express Wagga Wagga

    Diesel Mechanics, Mechanics

    353/355 Edward St, Wagga Wagga NSW 2650

    Directions View profile Est. 2000

    Coles Express in Wagga Wagga, NSW, a fuel stop selling petrol and gas, with a car wash and shop accessories.

    • Petrol
    • Car Wash
    • Diesel servicing and repairs

    353/355 Edward StWagga Wagga NSW 2650

    Open now · 24 hours

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  2. Coretuned

    Diesel Mechanics, 4x4

    1/93 Glenwood Dr, Thornton NSW 2322

    Directions View profile Est. 2022

    Performance workshop in Thornton, NSW for custom dyno tuning, diesel tuning, turbocharging and supercharging.

    • Custom Dyno Tuning of EFI systems
    • Turbocharging
    • Diesel Tuning

    1/93 Glenwood DrThornton NSW 2322

    Closed · opens 8:00 am

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  3. Cummins

    Diesel Mechanics

    21 Galleghan St, Hexham NSW 2322

    Directions View profile Est. 1919

    Cummins in Hexham, NSW supplies diesel engines and provides generator servicing, field service and planned maintenance.

    • Diesel Engines
    • Generator Service
    • Planned Maintenance

    21 Galleghan StHexham NSW 2322

    Closed · opens 7:00 am

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  5. Custom Sports Trucks

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

    Unit 5/4 Merinee Rd, West Gosford NSW 2250

    Directions View profile Est. 2020

    Truck equipment and parts specialist in West Gosford, NSW for classic US pick-up trucks, with customisations, brake upgrades and suspension.

    • Vehicle Customisations
    • Brake Upgrades
    • Suspensions

    Unit 5/4 Merinee RdWest Gosford NSW 2250

    Closed · opens 8:00 am

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  9. DPF Ultrasonic

    Diesel Mechanics, Mechanics

    Unit 21A/4 Louise Ave, Ingleburn NSW 2565

    Directions View profile

    DPF cleaning and diesel engine repair in Ingleburn, NSW, using ultrasonic cleaning and regeneration for blocked particulate filters.

    Unit 21A/4 Louise AveIngleburn NSW 2565

    Closed · opens 9:00 am

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  10. Daimler Trucks Milperra

    Mechanics, Diesel Mechanics

    20 Ashford Ave, Milperra NSW 2214

    Directions View profile

    Truck dealership in Milperra, NSW selling new and second-hand trucks, with a workshop that services trucks of any make.

    • Truck and bus repairs

    20 Ashford AveMilperra NSW 2214

    Closed · opens 7:00 am

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  15. DieselGas Moree

    Diesel Mechanics, Mechanics

    10 Blueberry Rd, Moree NSW 2400

    Directions View profile

    Diesel mechanic in Moree, NSW for diesel engine repairs and servicing of vehicles, industrial and irrigation equipment.

    10 Blueberry RdMoree NSW 2400

    Closed · opens 7:00 am

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  16. Dieselequip Inverell

    Diesel Mechanics, 4x4

    247 Byron St, Inverell NSW 2360

    Directions View profile Est. 2006

    Diesel and turbo specialists in Inverell, NSW, handling diesel pumps and injectors, turbochargers and diesel fault diagnosis.

    • Diesel pumps & injectors
    • Turbochargers
    • Diesel fault diagnosis

    247 Byron StInverell NSW 2360

    Closed · opens 8:00 am

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  17. Distinction Truck Bodies P/L

    Mechanics, Diesel Mechanics, 4x4

    6 Thornbill Dr, South Murwillumbah NSW 2484

    Directions View profile

    Truck body builder in South Murwillumbah, NSW, making new Pantechs, trays and curtainsiders, plus custom designs and alterations.

    • Truck and bus repairs
    • Ute trays and canopies

    6 Thornbill DrSouth Murwillumbah NSW 2484

    Closed · opens 7:00 am

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  18. Dom's Diesel

    Mechanics, Diesel Mechanics

    9877 New England Hwy, Glen Innes NSW 2370

    Directions View profile Est. 2022

    Truck and tractor parts and service business in Glen Innes, NSW, covering truck servicing, earthmoving equipment and hydraulic hoses.

    • Earthmoving equipment parts
    • Earthmoving equipment service
    • Truck service

    9877 New England HwyGlen Innes NSW 2370

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  19. Double R Equipment Repairs

    Diesel Mechanics

    42/44 Sydney Rd, Mudgee NSW 2850

    Directions View profile Est. 2022

    Equipment repair business in Mudgee, NSW for heavy vehicle and machinery repairs, machining, fabrication and auto electrical work.

    • Heavy vehicle & equipment repair
    • Machining & fabrication
    • Auto electrical work

    42/44 Sydney RdMudgee NSW 2850

    Closed · opens 7:00 am

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  20. Dynamo Services NSW Pty Ltd

    Diesel Mechanics

    188 Tizzana Rd, Ebenezer NSW 2756

    Directions View profile

    Diesel mechanic in Ebenezer, NSW servicing, repairing and supplying generators, including standby generators for local homes.

    • Generator servicing and repairs
    • Generator troubleshooting and repair
    • Standby generators

    188 Tizzana RdEbenezer NSW 2756

    Open now · 24 hours

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  21. EIP Diesel

    Diesel Mechanics

    37 Eddie Rd, Minchinbury NSW 2770

    Directions View profile

    Diesel engine supplier and workshop in Minchinbury, NSW, servicing, repairing and rebuilding industrial engines and building generator sets.

    • In-House Service
    • Engine rebuilds
    • Generator sets

    37 Eddie RdMinchinbury NSW 2770

    Closed · opens 8:00 am

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  22. Elite Heavy Diesel Repairs

    Diesel Mechanics, Mechanics, Auto Electricians

    Toormina NSW 2452

    View profile Est. 2024

    Mobile diesel mechanic in Toormina, NSW for diesel repairs, advanced diagnostics and road transport and earthmoving machinery.

    • Diesel Repairs
    • Advanced Diagnostics
    • Road Transport & Earthmoving Vehicle Ser…

    Toormina NSW 2452

    Closed · opens 7:30 am

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  23. Fenech Diesel Care

    Diesel Mechanics, Mechanics

    137 Racecourse Rd, Rutherford NSW 2320

    Directions View profile Est. 2022

    Diesel mechanic in Rutherford, NSW for diesel engine repairs, plus brake, clutch and truck and bus work.

    • Diesel engine repair service
    • Brake and clutch repairs
    • Truck and bus repairs

    137 Racecourse RdRutherford NSW 2320

    Closed · opens 7:00 am

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  24. Fleet Parts

    Diesel Mechanics, Mechanics

    1 Bowen Cres, West Gosford NSW 2250

    Directions View profile Est. 2000

    Truck parts supplier in West Gosford, NSW, with engine, clutch, suspension, filtration and electrical parts for heavy vehicles.

    • Truck parts for HINO, FUSO, UD NISSAN, I…
    • Truck parts
    • Clutch

    1 Bowen CresWest Gosford NSW 2250

    Closed · opens 7:00 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 73–96 of 953 diesel mechanics · filters apply to this page only

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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.