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.
Mechanics, Diesel Mechanics, Auto Electricians, 4x4, Tyres
Thrumster NSW 2444
Mobile diesel mechanic in Thrumster, NSW servicing heavy vehicles, plant machinery and light vehicles, with auto electrical repairs and tyre work.
Thrumster NSW 2444
Open now · 24 hours
Mobile diesel mechanic in South Grafton, NSW, covering truck and bus repairs, heavy vehicle work, plant and agricultural machinery and diagnostics.
South Grafton NSW 2460
Open now · 24 hours
Diesel Mechanics, Mechanics, 4x4
9A Wilfords Ln, Milton NSW 2538
Diesel mechanic in Milton, NSW for diesel engine servicing, heavy vehicle repairs and forklift servicing, with mobile on-site work.
9A Wilfords LnMilton NSW 2538
Closed · opens tomorrow 8:00 am
Mechanics, Diesel Mechanics
Unit 3/3 Belah Rd, Port Macquarie NSW 2444
Heavy vehicle repairer in Port Macquarie, NSW, for fleet maintenance, breakdowns and marine diesel work.
Unit 3/3 Belah RdPort Macquarie NSW 2444
Closed · opens tomorrow 7:00 am
Diesel mechanic in Unanderra, NSW for heavy vehicle mechanics, truck repairs and onsite servicing and repairs.
9 Resolution DrUnanderra NSW 2526
Open now · 24 hours
Diesel and 4x4 mechanic in Taree, NSW for diesel fuel injection, turbo repairs, logbook servicing and roadworthy checks.
1/ 7 Coolabah DrTaree NSW 2430
Closed · opens tomorrow 7:30 am
Mobile diesel mechanic in Narromine, NSW for truck and tractor repairs, diesel mechanical work and roadworthy certificates.
23-25 Sungift AveNarromine NSW 2821
Closed · opens tomorrow 8:00 am
Engine and fuel pump workshop in Nowra, NSW for fuel pump repairs and testing, engine machining and cylinder head reconditioning.
110 Albatross RdNowra NSW 2541
Closed · opens tomorrow 8:00 am
Mobile diesel mechanic in Terranora, NSW for diesel engine repairs, oil changes and performance upgrades.
Terranora NSW 2486
Open now · 24 hours
Mechanics, Diesel Mechanics, 4x4
171-173 Five Islands Rd, Unanderra NSW 2526
Truck and car repair workshop in Unanderra, NSW, for truck servicing, brake and clutch repairs and logbook servicing.
171-173 Five Islands RdUnanderra NSW 2526
Closed · opens tomorrow 8:00 am
Diesel Mechanics, Mechanics, Auto Electricians, 4x4, Tyres
94-98 Jardine St, Fairy Meadow NSW 2519
Diesel mechanic in Fairy Meadow, NSW for diesel servicing, truck and 4WD repairs, engine reconditioning and logbook servicing.
94-98 Jardine StFairy Meadow NSW 2519
Closed · opens tomorrow 8:00 am
Diesel Mechanics, Mechanics, Auto Electricians, 4x4, Tyres, Caravan Repairs
108- 110 Quarry Rd, South Murwillumbah NSW 2484
Diesel and heavy vehicle mechanic in South Murwillumbah, NSW for truck and bus repairs, logbook servicing and roadworthy inspections.
108- 110 Quarry RdSouth Murwillumbah NSW 2484
Closed · opens tomorrow 7:30 am
Mobile mechanic in Boambee, NSW for diesel repairs, truck and 4WD servicing, diagnostics and rego checks.
Unit 1/754 Pacific HwyBoambee NSW 2450
Closed · opens tomorrow 9:00 am
Mechanics, Diesel Mechanics
cnr Princes Highway & Orangegrove Ave, Unanderra NSW 2526
Truck parts and accessories supplier in Unanderra, NSW, also handling truck sales and truck maintenance and repairs.
cnr Princes Highway & Orangegrove AveUnanderra NSW 2526
Closed · opens tomorrow 8:00 am
Mechanics, Diesel Mechanics, 4x4, Tyres, Towing
42 Bruxner Hwy, South Lismore NSW 2480
Truck and bus repairer in South Lismore, NSW, handling truck repairs, bus and light commercial maintenance, brakes and recovery towing.
42 Bruxner HwySouth Lismore NSW 2480
Closed · opens tomorrow 8:00 am
Mechanics, Diesel Mechanics, Auto Electricians, 4x4, Tyres, Caravan Repairs
29 /19 Commerce St, Wauchope NSW 2446
Heavy vehicle repair shop in Wauchope, NSW for truck servicing, rego inspections, gearbox replacements and tyre fitting.
29 /19 Commerce StWauchope NSW 2446
Closed · opens tomorrow 7:30 am
Truck parts and panels supplier in Unanderra, NSW, serving Wollongong and the Illawarra.
171 Five Islands RdUnanderra NSW 2526
Closed · opens tomorrow 8:30 am
DPF Centre in Rutherford, NSW cleans and maintains diesel particulate filters, with thermal regeneration and filter replacement.
Unit 1/77 Mustang DrRutherford NSW 2320
Closed · opens tomorrow 8:30 am
Mobile machinery mechanic in Nabiac, NSW for farm machinery, construction equipment and tractor repairs and maintenance.
Nabiac NSW 2312
Closed · opens tomorrow 8:00 am
Diesel Mechanics, Mechanics, 4x4, Tyres
3 Loftus Pl, Forster NSW 2428
Truck, 4WD and car mechanics in Forster, NSW for logbook servicing, rego and HVIS inspections, diagnostics and hydraulic hoses.
3 Loftus PlForster NSW 2428
Closed · opens tomorrow 8:00 am
Diesel mechanic in Wingham, NSW servicing heavy vehicles, farm and construction equipment, with mobile repairs across Taree and surrounds.
Viscount RdWingham NSW 2429
Open now · closes 12:00 am
Diesel and tractor workshop in Kempsey, NSW, for diesel mechanical repairs, diesel fuel injection and farm machinery.
157 Smith StKempsey NSW 2440
Closed · opens tomorrow 8:00 am
Diesel Mechanics, Mechanics, Auto Electricians
34 Racecourse Rd, Rutherford NSW 2320
Diesel mechanics in Rutherford, NSW for truck and trailer repairs, hydraulic diagnostics and diesel engine work.
34 Racecourse RdRutherford NSW 2320
Open now · 24 hours
Mechanics, Diesel Mechanics, Auto Electricians, Tyres
104 Cameron St, Wauchope NSW 2446
Heavy vehicle repairer in Wauchope, NSW for truck and bus servicing, diesel mechanic work and rego inspections.
104 Cameron StWauchope NSW 2446
Closed · opens tomorrow 7:00 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 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.
