Australia's directory of mechanics and motoring services
Describe the job once and we'll match it with up to 3 diesel mechanics in Firefly.
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.
56 diesel mechanics based in or serving Firefly; listings updated 7 Oct 2026.
These businesses aren't based in Firefly but list it as a service area.
Mechanics, Diesel Mechanics
Based in Gloucester NSW · serves Firefly
Mechanical workshop in Gloucester, NSW for vehicle servicing, mechanical repairs and dyno tuning.
Based in Gloucester NSWServes Firefly
Closed · opens 8:30 am
Mobile truck and trailer repairer based in Seaham, NSW, servicing Newcastle and the Hunter Valley.
Based in Seaham NSWServes Firefly
Open now · 24 hours
Mobile diesel mechanic in Medowie, NSW for breakdowns, planned maintenance and logbook servicing.
Based in Medowie NSWServes Firefly
Open now · 24 hours
Truck body builder in Heatherbrae, NSW, making tipper and tray bodies, doing chassis work, repairs and custom modifications.
Based in Heatherbrae NSWServes Firefly
Closed · opens 7:30 am
Mechanics, Diesel Mechanics
Based in Taree NSW · serves Firefly
Heavy mechanical and hydraulic hose business in Taree, NSW, working on hydraulics, diesel engines and machinery, with on-site jobs.
Based in Taree NSWServes Firefly
Open now · 24 hours
Performance parts and 4x4 upgrades in Beresfield, NSW, covering ECU remapping, exhausts and engine performance work.
Based in Beresfield NSWServes Firefly
Closed · opens 8:00 am
Truck and fleet parts supplier in Hexham, NSW, stocking truck and trailer parts and accessories, including genuine and aftermarket components.
Based in Hexham NSWServes Firefly
Closed · opens 8:00 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics
Based in Beresfield NSW · serves Firefly
Truck workshop in Beresfield, NSW for truck servicing, mechanical repairs, rego inspections and auto electrical work.
Based in Beresfield NSWServes Firefly
Closed · opens 6:00 am
No diesel mechanics on this page match all of these filters. Untick one, or clear the filters to see all 8 on this page.
Showing 49–56 of 56 diesel mechanics · filters apply to this page only
Tell us about the job and we'll match it with up to 3 diesel mechanics in Firefly. 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.
Diesel mechanics for diesel servicing and repairs, injectors and fuel systems, DPF cleaning and truck repairs. Mechanics Directory lists 56 diesel mechanics in Firefly NSW. Listings show the services each business offers, and a rating where there is one.
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.
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 Firefly.
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.
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.
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.
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.
