Australia's directory of mechanics and motoring services
Describe the job once and we'll match it with up to 3 diesel mechanics in Sydney.
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.
191 diesel mechanics in Sydney; listings updated 7 Oct 2026.
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
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
Diesel engine reconditioning specialist in Guildford, NSW, rebuilding engines and modifying injection pumps and injectors.
5 Yennora AveGuildford NSW 2161
Closed · opens tomorrow 8:00 am
Truck and bus repair business in South Windsor, NSW, also offering breakdown assistance across the surrounding area.
110 Mileham StSouth Windsor NSW 2756
Closed · opens tomorrow 7:00 am
LPG conversion specialist in Hornsby Heights, NSW, converting 4WDs, utes, vans and taxis and servicing LPG systems.
5 Evans RdHornsby Heights NSW 2077
Mobile DPF cleaning service in Fairfield East, NSW, for DPF diagnostics, cleaning and regeneration on diesel vehicles.
5-7 Malta StFairfield East NSW 2165
Open now · 24 hours
DPF cleaning and diesel engine repair in Ingleburn, NSW, using ultrasonic cleaning and regeneration for blocked particulate filters.
Unit 21A/4 Louise AveIngleburn NSW 2565
Closed · opens tomorrow 9:00 am
Truck dealership in Milperra, NSW selling new and second-hand trucks, with a workshop that services trucks of any make.
20 Ashford AveMilperra NSW 2214
Closed · opens tomorrow 7:00 am
Diesel mechanic in Ebenezer, NSW servicing, repairing and supplying generators, including standby generators for local homes.
188 Tizzana RdEbenezer NSW 2756
Open now · 24 hours
Diesel engine supplier and workshop in Minchinbury, NSW, servicing, repairing and rebuilding industrial engines and building generator sets.
37 Eddie RdMinchinbury NSW 2770
Closed · opens tomorrow 8:00 am
Diesel fuel injection specialist in Granville, NSW, handling injector testing and remanufacturing, diesel pump repairs and parts sales.
4 Milton StGranville NSW 2142
Closed · opens tomorrow 7:30 am
Diesel engine repair and servicing workshop in Narellan, NSW, looking after diesel vehicles and fleets.
11 Bellingham StNarellan NSW 2567
Closed · opens tomorrow 8:00 am
Truck parts and repair business in Fairfield East, NSW, reconditioning engines, transmissions and differentials for Japanese trucks.
10/80 Seville StFairfield East NSW 2165
Closed · opens tomorrow 9:00 am
Mechanics, Diesel Mechanics
Unit 2/49 Central Hills Dr, Gregory Hills NSW 2557
Truck repair and parts business in Gregory Hills, NSW, also offering crane services for heavier lifting work.
Unit 2/49 Central Hills DrGregory Hills NSW 2557
Closed · opens tomorrow 7:00 am
Diesel Mechanics, Mechanics, 4x4, Caravan Repairs
1 Turnbull Cl, Pemulwuy NSW 2145
Truck and bus parts supplier in Pemulwuy, NSW, covering drivetrain, braking, cooling and suspension components.
1 Turnbull ClPemulwuy NSW 2145
Closed · opens tomorrow 7:30 am
Truck repair shop in Smeaton Grange, NSW offering on-site repairs, auto electrical diagnostics and parts supply.
8 Waler CresSmeaton Grange NSW 2567
Open now · closes 11:00 pm
Diesel engine specialists in Fairfield East, NSW, tuning and repairing diesel engines on-site across Sydney's south-west.
7 Malta StFairfield East NSW 2165
Closed · opens tomorrow 12:00 pm
Truck repair and diesel engine specialists in Saint Marys, NSW, servicing heavy vehicles across Sydney's west.
Anne StSaint Marys NSW 2760
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 191 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 Sydney. 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 191 diesel mechanics in Sydney. 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 Sydney.
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.
