Australia's directory of mechanics and motoring services
Describe the job once and we'll match it with up to 3 diesel mechanics in Newcastle.
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.
83 diesel mechanics in Newcastle; listings updated 7 Oct 2026.
Mechanics, Auto Electricians, 4x4, Diesel Mechanics
41 Northville Dr, Barnsley NSW 2278
Mechanic in Barnsley, NSW for car servicing, brake repairs, suspension and steering work, exhausts and LPG conversions.
41 Northville DrBarnsley NSW 2278
Closed · opens 8:00 am
Mobile diesel mechanic in Medowie, NSW for breakdowns, planned maintenance and logbook servicing.
Medowie NSW 2318
Open now · 24 hours
Truck body builder in Heatherbrae, NSW, making tipper and tray bodies, doing chassis work, repairs and custom modifications.
34 Heather StHeatherbrae NSW 2324
Closed · opens 7:30 am
Spray-on polyurethane coating and waterproofing specialist in Mayfield, NSW for truck beds, trailers, roofs, tanks and concrete.
Unit 11/17 Riverside DrMayfield NSW 2304
Closed · opens 7:00 am
Performance and general repair workshop in Warners Bay, NSW, for dyno tuning, performance upgrades and logbook servicing.
Unit 1A/183 Macquarie RdWarners Bay NSW 2282
Closed · opens 8:00 am
Auto Electricians, Mechanics, 4x4, Tyres, Diesel Mechanics
1/2 Teran Cl, Whitebridge NSW 2290
Motorcycle and vehicle workshop in Whitebridge, NSW for dyno tuning, logbook servicing, pink slips and tyre fitting.
1/2 Teran ClWhitebridge NSW 2290
Closed · opens 8:30 am
Performance parts and 4x4 upgrades in Beresfield, NSW, covering ECU remapping, exhausts and engine performance work.
28 Yilen ClBeresfield NSW 2322
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.
171 Old Maitland RdHexham NSW 2322
Closed · opens 8:00 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics
4 Canavan Dr, Beresfield NSW 2322
Truck workshop in Beresfield, NSW for truck servicing, mechanical repairs, rego inspections and auto electrical work.
4 Canavan DrBeresfield NSW 2322
Closed · opens 6:00 am
Mechanics, Auto Electricians, 4x4, Diesel Mechanics
Shed 8/7 Walker St, Warners Bay NSW 2282
Mechanic in Warners Bay, NSW for logbook servicing, brake and clutch repairs, diesel work and rego inspections.
Shed 8/7 Walker StWarners Bay NSW 2282
Closed · opens 8:00 am
Mechanics, Diesel Mechanics, Caravan Repairs
18 Nicholson St, Toronto NSW 2283
Diesel mechanic in Toronto, NSW, working on trucks and buses, trailers, construction machinery and air compressors.
18 Nicholson StToronto NSW 2283
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 11 on this page.
Showing 73–83 of 83 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 Newcastle. 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 83 diesel mechanics in Newcastle. 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 Newcastle.
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.
