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Describe the job once and we'll match it with up to 3 diesel mechanics in Castle Doyle.

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Diesel Mechanics in Castle Doyle NSW

12 diesel mechanics1 based here · 11 serve the area★ 4.9 average from 10 reviews

About these results

Based here first, then 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.

12 diesel mechanics based in or serving Castle Doyle; listings updated 7 Oct 2026.

  2. Based nearby, serving Castle Doyle

    These businesses aren't based in Castle Doyle but list it as a service area.

  3. North Barraba Diesel

    Diesel Mechanics, Mechanics, Auto Electricians, Tyres

    Based in Barraba NSW · serves Castle Doyle

    Directions View profile Credentials listed Serves this area Est. 2016

    Diesel mechanic in Barraba, NSW for diesel repairs, logbook servicing, engine and gearbox repairs, and truck and tractor work.

    • Logbook Services
    • Engine & Gearbox Repairs
    • Truck Repairs

    Based in Barraba NSWServes Castle Doyle

    Closed · opens 8:00 am

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  4. Northwest Plant Repairs

    Diesel Mechanics, Mechanics, Auto Electricians, 4x4

    Based in Taminda NSW · serves Castle Doyle

    Directions View profile Serves this area Est. 2022

    Diesel mechanic in Taminda, NSW for heavy machinery servicing, diesel engine repairs and auto electrical work.

    • Diesel Engine Diagnostics
    • Heavy Machinery Servicing
    • Mining & Heavy Machinery Repairs

    Based in Taminda NSWServes Castle Doyle

    By appointment

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  5. Torque Force Diesel

    Diesel Mechanics, Mechanics, 4x4

    Based in Kootingal NSW · serves Castle Doyle

    View profile Credentials listed Serves this area 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

    Based in Kootingal NSWServes Castle Doyle

    Open now · 24 hours

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  6. Inverell 4WD Centre

    Mechanics, 4x4, Tyres, Diesel Mechanics, Towing

    Based in Inverell NSW · serves Castle Doyle

    4.8 (5 reviews) Directions View profile Serves this area Est. 1975

    4WD mechanic in Inverell, NSW for 4WD servicing, car servicing, rego checks and ARB accessories.

    • Car Servicing
    • Registration Inspections
    • Old Man Emu Suspension

    Based in Inverell NSWServes Castle Doyle

    Closed · opens 8:00 am

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  7. John Fowler Automotive & Engine Reconditioning

    Mechanics, Auto Electricians, Tyres, Diesel Mechanics

    Based in Armidale NSW · serves Castle Doyle

    5.0 (3 reviews) Directions View profile Credentials listed Serves this area Est. 1983

    Mechanic and engine reconditioner in Armidale, NSW for logbook servicing, engine reconditioning, brake and clutch work, and registration inspections.

    • Engine Reconditioning
    • Log Book or General Servicing
    • Brake & Clutch Repairs & Service

    Based in Armidale NSWServes Castle Doyle

    Closed · opens 8:00 am

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  8. Wrench King

    Mechanics, Tyres, Panel Beaters, Diesel Mechanics

    Based in Uralla NSW · serves Castle Doyle

    5.0 (2 reviews) Directions View profile Serves this area Est. 2015

    Wrench King in Uralla, NSW handles car body repairs, mechanical work and vehicle restorations for the Uralla and Armidale area.

    • Car Body Repairs
    • Car Restorations
    • European and make specialist servicing

    Based in Uralla NSWServes Castle Doyle

    Closed · opens 8:00 am

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  9. New England Hydraulics & Diesel

    Mechanics, Diesel Mechanics

    Based in Armidale NSW · serves Castle Doyle

    Directions View profile Credentials listed Serves this area Est. 1992

    Hydraulic and diesel workshop in Armidale, NSW, for hydraulic repairs, hose fittings, cylinder repairs and parts supply.

    • Hydraulic Repairs
    • Hoses Hydraulic Repairs
    • Cylinder Repairs

    Based in Armidale NSWServes Castle Doyle

    Closed · opens 7:30 am

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  10. GA Plant & Automotive Repairs

    Mechanics, 4x4, Diesel Mechanics

    Based in Taminda NSW · serves Castle Doyle

    Directions View profile Serves this area Est. 2020

    Automotive and plant repairer in Taminda, NSW, handling 4x4 repairs, suspension upgrades, GVM upgrades and heavy machinery repairs.

    • Plant Repairs
    • Heavy Machinery Repairs
    • 4x4 Repairs

    Based in Taminda NSWServes Castle Doyle

    Closed · opens 6:00 am

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  11. Platinum Truck & Plant Repairs

    Mechanics, 4x4, Diesel Mechanics, Caravan Repairs, Towing

    Based in Tamworth NSW · serves Castle Doyle

    View profile Serves this area Est. 2022

    Truck and heavy machinery mechanic in Tamworth, NSW for truck repairs, trailer repairs, diesel engine diagnostics and mobile breakdowns.

    • Truck Repairs
    • Trailer Repairs
    • Engine Diagnostic & Repairs

    Based in Tamworth NSWServes Castle Doyle

    Open now · 24 hours

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  12. TJM Armidale Automotive

    Mechanics, 4x4, Diesel Mechanics

    Based in Armidale NSW · serves Castle Doyle

    Directions View profile Credentials listed Serves this area Est. 1973

    4x4 accessories and mechanical workshop in Armidale, NSW, for suspension and GVM upgrades, bar work, winches and 4WD fitouts.

    • Full Mechanical Repairs
    • 4X4 Fitouts
    • Suspension and GVM Upgrades

    Based in Armidale NSWServes Castle Doyle

    Closed · opens 8:00 am

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  13. mycar Tyre & Auto Armidale

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

    Based in Armidale NSW · serves Castle Doyle

    Directions View profile Credentials listed Serves this area Est. 2019

    Tyre and auto shop in Armidale, NSW for tyre fitting, wheel alignments, brake repairs, batteries and logbook servicing.

    • Brake Repairs
    • Roadworthy Inspections
    • Wheel Alignments

    Based in Armidale NSWServes Castle Doyle

    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 12 on this page.

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Tell us about the job and we'll match it with up to 3 diesel mechanics in Castle Doyle. 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 Castle Doyle

Diesel mechanics for diesel servicing and repairs, injectors and fuel systems, DPF cleaning and truck repairs. Mechanics Directory lists 12 diesel mechanics in Castle Doyle NSW. 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 rating, 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 Castle Doyle?

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 Castle Doyle?

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 Castle Doyle.

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.