MechanicsDirectory Upgrade to Featured Get free quotes

Australia's directory of mechanics and motoring services

MechanicsDirectory
Get free quotesFree · up to 3 businesses

Get free quotes

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

Get free quotes

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. Southside Truck Centre

    Mechanics, Diesel Mechanics

    2/20 Acacia Ave, Port Macquarie NSW 2444

    Directions View profile Est. 2022

    Truck parts and accessories supplier in Port Macquarie, NSW, also covering truck and bus repairs.

    • Truck Parts
    • Oil
    • Truck and bus repairs

    2/20 Acacia AvePort Macquarie NSW 2444

    Closed · opens 8:00 am

  2. St Quintin Truck Repairs

    Mechanics, Diesel Mechanics

    Anne St, Saint Marys NSW 2760

    Directions View profile

    Truck repair and diesel engine specialists in Saint Marys, NSW, servicing heavy vehicles across Sydney's west.

    • Truck and bus repairs

    Anne StSaint Marys NSW 2760

    Closed · opens 7:00 am

  3. Sydney 4x4 Diesel Tuning

    Diesel Mechanics

    Unit 26 3 11 Flora St, Kirrawee NSW 2233

    Directions View profile

    Diesel tuning business in Kirrawee, NSW for ECU remapping, dyno testing and performance upgrades on 4x4s.

    • ECU remapping
    • Performance upgrades
    • Dyno testing

    Unit 26 3 11 Flora StKirrawee NSW 2233

    Closed · opens 9:00 am

  4. Sydney Diesel Marine Pty Ltd

    Diesel Mechanics

    Level 1/36 Hotham Parade, Artarmon NSW 2064

    Directions View profile

    Marine diesel mechanic in Artarmon, NSW for engine servicing and repairs, rebuilds and repowers, and fuel injection work.

    • Engine Servicing & Repairs
    • Rebuilds & Repowers
    • Fuel Injection & Fuel Systems

    Level 1/36 Hotham ParadeArtarmon NSW 2064

    Closed · opens 8:00 am

  5. Tamworth Iveco

    Mechanics, Diesel Mechanics, 4x4

    75-77 Plain St, Taminda NSW 2340

    Directions View profile Est. 2022

    Truck servicing, repairs and spare parts in Taminda, NSW, serving Tamworth and the surrounding area.

    • Truck spare parts
    • Truck service & repairs

    75-77 Plain StTaminda NSW 2340

    Closed · opens 8:00 am

  6. The Haire Truck & Bus Repairs

    Diesel Mechanics, Mechanics, 4x4

    9B Moloney Dr, Wodonga NSW 3690

    Directions View profile Est. 2022

    Truck and bus repairer in Wodonga, NSW, handling diesel vehicle servicing and repairs, steering and suspension, and mechanical repairs.

    • Diesel vehicle services & repairs
    • Steering & suspension
    • Truck and bus repairs

    9B Moloney DrWodonga NSW 3690

    Closed · opens 7:00 am

  7. The Rock Tractor Service

    Diesel Mechanics, Mechanics

    61 Scott St, The Rock NSW 2655

    Directions View profile

    Diesel engine repair specialist in The Rock, NSW, also covering Wagga Wagga, Tumut, Temora and nearby towns.

    61 Scott StThe Rock NSW 2655

    Closed · opens 8:00 am

  8. Titan Diesel

    Diesel Mechanics

    Louth Park NSW 2320

    View profile

    Mobile diesel mechanic based in Louth Park, NSW, servicing fleets across Maitland and the Hunter Valley with on-site diesel repairs and scheduled maintenance.

    • Mobile Fleet Servicing
    • Diesel Repairs
    • Injector faults

    Louth Park NSW 2320

    Open now · 24 hours

  9. Torque Force Diesel

    Diesel Mechanics, Mechanics, 4x4

    Kootingal NSW 2352

    View profile Credentials listed Est. 2026

    Mobile diesel mechanic in Kootingal, NSW for truck and trailer repairs, fleet maintenance and plant maintenance across the North West.

    • Mobile Mechanic
    • Truck Repairs
    • Fleet Maintenance

    Kootingal NSW 2352

    Open now · 24 hours

  10. Torque N Diesel

    Mechanics, Diesel Mechanics, Caravan Repairs

    2/17 Penelope Cres, Arndell Park NSW 2148

    Directions View profile

    Diesel truck repair specialists in Arndell Park, NSW, doing on-site servicing, engine diagnostics and trailer work.

    • Truck and bus repairs
    • Trailer servicing and repairs

    2/17 Penelope CresArndell Park NSW 2148

    Closed · opens 7:00 am

  11. Truck Mechanic

    Mechanics, Diesel Mechanics, 4x4, Tyres, Caravan Repairs

    Rossmore NSW 2557

    View profile Est. 2013

    Truck mechanic in Rossmore, NSW for heavy truck servicing and repairs, diesel engine work, diagnostics and mobile breakdown help.

    • Truck Services
    • Diesel Engine Services
    • On-The-Spot Diagnostics

    Rossmore NSW 2557

    Open now · 24 hours

  12. Truck Tech Group Chipping Norton

    Mechanics, Diesel Mechanics, 4x4, Caravan Repairs

    49-51 Governor Macquarie Drive, Chipping Norton NSW 2170

    Directions View profile Est. 2006

    Heavy vehicle repairers in Chipping Norton, NSW for trucks, buses and trailers, with on-site servicing and roadside assistance.

    • Heavy Vehicle Repairs
    • Truck Repairs
    • Bus Repairs

    49-51 Governor Macquarie DriveChipping Norton NSW 2170

    Closed · opens 9:00 am

  13. TruckParts Dubbo

    Mechanics, Diesel Mechanics

    1 Bourke St, Dubbo NSW 2830

    Directions View profile Est. 2022

    Truck parts supplier and mechanic in Dubbo, NSW, for truck and trailer parts, transmissions, brakes and clutch spares, and Japanese and European truck parts.

    • Transmission parts
    • Brakes & clutch spares
    • Japanese & European truck parts

    1 Bourke StDubbo NSW 2830

    Closed · opens 8:00 am

  14. Turbo Glide Diesel Turbocharging

    Diesel Mechanics, Mechanics, 4x4

    609 Princes Hwy, Russell Vale NSW 2517

    Directions View profile Credentials listed Est. 1965

    Turbo and diesel workshop in Russell Vale, NSW, building turbo conversions, dyno tuning and fuel injection work for 4x4s, commercials and motorhomes.

    • Turbo conversion
    • Supply & fitting of reliable diesel exch…
    • Diesel dyno tuning & opacity testing of…

    609 Princes HwyRussell Vale NSW 2517

    Closed · opens 7:30 am

  15. Twin City Truck Centre

    Mechanics, Diesel Mechanics, 4x4

    255 McKoy St, West Wodonga NSW 3690

    Directions View profile Est. 2022

    Truck centre in West Wodonga, NSW for new and used truck sales, truck servicing and accessories.

    • New trucks
    • Used trucks
    • New & used truck sales & service

    255 McKoy StWest Wodonga NSW 3690

    Closed · opens 8:00 am

  16. Vector Heavy Industries

    Mechanics, Diesel Mechanics

    17 Purvis Ln, Dubbo NSW 2830

    Directions View profile

    Heavy vehicle workshop in Dubbo, NSW, working on trucks, diesel engines and everyday car upkeep.

    • Oil change
    • Truck and bus repairs

    17 Purvis LnDubbo NSW 2830

    Open now · 24 hours

  17. Viking Diesel and Electrics

    Diesel Mechanics

    6 Apollo St, Warriewood NSW 2102

    Directions View profile

    Diesel engine repair and generator specialists in Warriewood, NSW, servicing standby generators and marine power systems.

    • Generator installation
    • Standby generator maintenance
    • Marine power generation service

    6 Apollo StWarriewood NSW 2102

    Closed · opens 8:00 am

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 145–168 of 953 diesel mechanics · filters apply to this page only

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.

Get free quotes

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.