Australia's directory of mechanics and motoring services
Describe the job once and we'll match it with up to 3 diesel mechanics in New South Wales.
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.
Diesel mechanic in Coffs Harbour, NSW for diesel engine repairs, fault diagnostics, DPF cleaning and truck servicing.
20 Fraser DrCoffs Harbour NSW 2450
Closed · opens tomorrow 8:00 am
Truck and heavy vehicle workshop in Dubbo, NSW for truck servicing and repairs, transmissions, differentials and trailer repairs.
Purvis LnDubbo NSW 2830
Closed · opens tomorrow 8:00 am
Diesel and petrol mechanic in South Grafton, NSW for logbook servicing, fuel injection work and engine diagnostics.
95 Ryan StSouth Grafton NSW 2460
Closed · opens tomorrow 9:00 am
Mechanics, Diesel Mechanics, 4x4, Tyres, Caravan Repairs
3 Brady St, Berkeley NSW 2506
Truck repair shop and mobile truck mechanic in Berkeley, NSW, for truck and trailer repairs, brake and clutch work and spare parts.
3 Brady StBerkeley NSW 2506
Closed · opens tomorrow 7:00 am
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
Diesel mechanic in Queanbeyan West, NSW for logbook servicing, brake and clutch repairs, diagnostics and 4x4 accessories.
2 Bayldon RdQueanbeyan West NSW 2620
Closed · opens tomorrow 8:00 am
Diesel mechanic in Westdale, NSW for truck and trailer repairs, heavy vehicle diagnostics and mobile breakdown assistance.
42-44 Goddard LnWestdale NSW 2340
Open now · 24 hours
Diesel Mechanics, Mechanics, Auto Electricians
52 William St, Orange NSW 2800
Mobile diesel mechanic and auto electrician in Orange, NSW for diagnostics, diesel engine work and wiring repairs.
52 William StOrange NSW 2800
Closed · opens tomorrow 8:00 am
Diesel Mechanics, Mechanics, Auto Electricians, 4x4
114 Yarrie Lake Rd, Narrabri NSW 2390
Mechanic in Narrabri, NSW for mechanical repairs, logbook servicing, truck and trailer work and agricultural machinery repairs.
114 Yarrie Lake RdNarrabri NSW 2390
Closed · opens tomorrow 8:00 am
Truck and 4WD repair workshop in Orange, NSW, handling truck, bus and 4WD repairs, diesel work, engine rebuilds and brakes.
18 McNeilly AveOrange NSW 2800
Closed · opens tomorrow 8:00 am
Mobile diesel mechanic in Dubbo, NSW for diesel repairs, farm and earthmoving machinery servicing, diagnostics and heavy vehicle air conditioning.
Dubbo NSW 2830
Closed · opens tomorrow 7:00 am
Diesel Mechanics, Mechanics, Auto Electricians, 4x4
21 Cook Dr, Coffs Harbour NSW 2450
Truck centre in Coffs Harbour, NSW for scheduled servicing, inspections, wheel alignments and auto electrical repairs.
21 Cook DrCoffs Harbour NSW 2450
Closed · opens tomorrow 8:00 am
Diesel Mechanics, Mechanics, Auto Electricians, 4x4
5 Woolford Cres, South Kempsey NSW 2440
Truck centre in South Kempsey, NSW for truck servicing, diesel engine repairs, inspections and spare parts.
5 Woolford CresSouth Kempsey NSW 2440
Closed · opens tomorrow 7:00 am
Diesel Mechanics, Mechanics, Auto Electricians, 4x4
20 Grey Gum Rd, Taree NSW 2430
Truck centre in Taree, NSW for Mercedes Benz and Freightliner sales, servicing, inspections and spare parts.
20 Grey Gum RdTaree NSW 2430
Closed · opens tomorrow 8:00 am
Diesel Mechanics, Mechanics, Auto Electricians, Tyres
70 Queen St, Barraba NSW 2347
Diesel mechanic in Barraba, NSW for diesel repairs, logbook servicing, engine and gearbox repairs, and truck and tractor work.
70 Queen StBarraba NSW 2347
Closed · opens tomorrow 8:00 am
Mobile diesel mechanic in Alstonville, NSW, servicing trucks, plant, cranes and agricultural machinery across the Northern Rivers.
14 Kays LaneAlstonville NSW 2477
Closed · opens tomorrow 7:00 am
Mechanics, Diesel Mechanics, Auto Electricians, 4x4, Tyres
Unit 1/21 Production Dr, Wauchope NSW 2446
Heavy vehicle and truck repairer in Wauchope, NSW, also handling servicing, rego inspections, tyres, batteries and wheel alignments.
Unit 1/21 Production DrWauchope NSW 2446
Closed · opens tomorrow 8:00 am
Diesel workshop in Dubbo, NSW for diesel engine repairs, fuel pump and injector cleaning, testing and reconditioning.
87a River StDubbo NSW 2830
Closed · opens tomorrow 8:00 am
Diesel Mechanics, Mechanics, 4x4, Panel Beaters, Towing
76-78 Derby St, Glen Innes NSW 2370
Diesel repairs and mechanical work in Glen Innes, NSW, plus towing, truck and bus repairs, brakes and clutches.
76-78 Derby StGlen Innes NSW 2370
Closed · opens tomorrow 8:00 am
Diesel mechanic in Gregory Hills, NSW for performance tuning, ECU remapping, diagnostics and DPF cleaning.
2/ 21 Rodeo RdGregory Hills NSW 2557
Closed · opens tomorrow 8:00 am
Diesel Mechanics, Mechanics, Auto Electricians, 4x4
2/ 3 Denison St, Taminda NSW 2340
Diesel mechanic in Taminda, NSW for heavy machinery servicing, diesel engine repairs and auto electrical work.
2/ 3 Denison StTaminda NSW 2340
By appointment
Mobile diesel mechanic in Lake Innes, NSW, repairing earthmoving gear, farm machinery and plant on site, plus welding.
Lake Innes NSW 2446
Closed · opens tomorrow 6:00 am
Mechanics, Diesel Mechanics, Caravan Repairs
4-6 Stout Rd, Mount Druitt NSW 2770
Heavy vehicle repairer in Mount Druitt, NSW, handling truck and trailer work, on-site servicing and oil changes.
4-6 Stout RdMount Druitt NSW 2770
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 25–48 of 953 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 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.
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.
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 New South Wales.
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.
