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.
Heavy machinery repair and maintenance in Beresfield, NSW, servicing earthmoving and mining plant, trucks and excavators on site.
Unit 3/35 Yilen CloseBeresfield NSW 2322
Open now · 24 hours
Power systems workshop in Islington, NSW, specialising in gas reciprocating engines, overhauls and in-situ machining.
25 Girling StIslington NSW 2296
Performance workshop in Thornton, NSW for custom dyno tuning, diesel tuning, turbocharging and supercharging.
1/93 Glenwood DrThornton NSW 2322
Closed · opens tomorrow 8:00 am
Cummins in Hexham, NSW supplies diesel engines and provides generator servicing, field service and planned maintenance.
21 Galleghan StHexham NSW 2322
Closed · opens tomorrow 7:00 am
Diesel Mechanics, Mechanics, Caravan Repairs
18B Pendlebury Rd, Cardiff NSW 2285
Truck and trailer fleet maintenance workshop in Cardiff, NSW, working on trucks, trailers and heavy vehicles.
18B Pendlebury RdCardiff NSW 2285
Closed · opens tomorrow 7:00 am
Diesel Mechanics, Mechanics
59 Railway Parade, Blackalls Park NSW 2283
Marine engineers and diesel mechanics in Blackalls Park, NSW, working on boats and outboards around Lake Macquarie.
59 Railway ParadeBlackalls Park NSW 2283
Mechanics, Auto Electricians, 4x4, Diesel Mechanics
31 Fourth St, Boolaroo NSW 2284
Car servicing and repair workshop in Boolaroo, NSW, handling scheduled servicing, clutch and brake work, inspections and air conditioning.
31 Fourth StBoolaroo NSW 2284
Closed · opens tomorrow 8:00 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics
1/ 19 Abundance Rd, Medowie NSW 2318
Mechanic in Medowie, NSW for logbook servicing, brake repairs, roadworthy inspections and tyre work.
1/ 19 Abundance RdMedowie NSW 2318
Closed · opens tomorrow 8:00 am
Diesel and earthmoving repairer in Warners Bay, NSW, handling plant, truck and LPG repairs and maintenance.
7 Walker StWarners Bay NSW 2282
Closed · opens tomorrow 8:00 am
Mechanic in Lambton, NSW for LPG and natural gas conversions, logbook servicing and pink slip inspections.
54 Orlando RdLambton NSW 2299
Closed · opens tomorrow 8:00 am
Mechanics, Auto Electricians, Tyres, Diesel Mechanics
Shop 1/5 James St, Toronto NSW 2283
Mechanic in Toronto, NSW for logbook servicing, brake and clutch repairs, vehicle inspections and pink, blue and LPG slips.
Shop 1/5 James StToronto NSW 2283
Closed · opens tomorrow 8:00 am
Mechanic in Edgeworth, NSW for logbook servicing, brake and clutch repairs, diagnostics and safety inspections.
45 Thomas StEdgeworth NSW 2285
Closed · opens tomorrow 8:00 am
4x4, Mechanics, Tyres, Diesel Mechanics, Caravan Repairs
Unit 1/31 Munibung Rd, Cardiff NSW 2285
4WD accessories and fitout shop in Cardiff, NSW, for lift kits, bullbars, towbars, roof racks and wheel alignments.
Unit 1/31 Munibung RdCardiff NSW 2285
Closed · opens tomorrow 8:00 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics
4/ 5 Grattoir Pl, Toronto NSW 2283
Mechanic in Toronto, NSW handling logbook servicing, brake and clutch repairs, diagnostics and wheel alignments for petrol and diesel cars and light trucks.
4/ 5 Grattoir PlToronto NSW 2283
Closed · opens tomorrow 7:30 am
Motorcycle shop in Boolaroo, NSW selling bikes and handling servicing, rebuilds, restorations and wheel respoking.
10 Main RdBoolaroo NSW 2284
Closed · opens tomorrow 8:30 am
Mechanics, Auto Electricians, 4x4, Tyres, Panel Beaters, Diesel Mechanics
Unit 1/90 Hannell St, Wickham NSW 2293
Mechanic in Wickham, NSW for logbook servicing, brake and clutch repairs, suspension work and rego checks.
Unit 1/90 Hannell StWickham NSW 2293
Closed · opens tomorrow 8:00 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics
702 Main Rd, Edgeworth NSW 2285
Mechanic in Edgeworth, NSW for logbook servicing, brake and clutch repairs, roadworthy inspections and auto electrical work.
702 Main RdEdgeworth NSW 2285
Closed · opens tomorrow 8:00 am
Mechanics, Auto Electricians, Diesel Mechanics
3 Motto Ln, Heatherbrae NSW 2324
Mechanic in Heatherbrae, NSW for general servicing, rego checks, mechanical repairs and auto air-conditioning.
3 Motto LnHeatherbrae NSW 2324
Closed · opens tomorrow 8:00 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics
36 Wyong Rd, Lambton NSW 2299
Mechanic in Lambton, NSW for brake and clutch repairs, gearbox servicing, wheel alignments and car air conditioning.
36 Wyong RdLambton NSW 2299
Closed · opens tomorrow 8:00 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics
2 Skyline Way, Gateshead NSW 2290
Mechanic in Gateshead, NSW for logbook servicing, brake and clutch work, tyres and wheel alignments, and inspections.
2 Skyline WayGateshead NSW 2290
Closed · opens tomorrow 8:00 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics
Waratah NSW 2298
Tyre and auto shop in Waratah, NSW for tyres, brake repairs, logbook servicing and roadworthy inspections.
Waratah NSW 2298
Closed · opens tomorrow 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 1–24 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.
