Australia's directory of mechanics and motoring services
Describe the job once and we'll match it with up to 3 diesel mechanics in Tomago.
Based here first, then 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.
27 diesel mechanics based in or serving Tomago; listings updated 7 Oct 2026.
These businesses aren't based in Tomago but list it as a service area.
Mechanics, Diesel Mechanics, Auto Electricians, 4x4, Tyres
Based in Thrumster NSW · serves Tomago
Mobile diesel mechanic in Thrumster, NSW servicing heavy vehicles, plant machinery and light vehicles, with auto electrical repairs and tyre work.
Based in Thrumster NSWServes Tomago
Open now · 24 hours
Heavy machinery repair and maintenance in Beresfield, NSW, servicing earthmoving and mining plant, trucks and excavators on site.
Based in Beresfield NSWServes Tomago
Open now · 24 hours
Performance workshop in Thornton, NSW for custom dyno tuning, diesel tuning, turbocharging and supercharging.
Based in Thornton NSWServes Tomago
Closed · opens 8:00 am
Cummins in Hexham, NSW supplies diesel engines and provides generator servicing, field service and planned maintenance.
Based in Hexham NSWServes Tomago
Closed · opens 7:00 am
Based in Medowie NSWServes Tomago
Closed · opens 9:00 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics
Based in Medowie NSW · serves Tomago
Mechanic in Medowie, NSW for logbook servicing, brake repairs, roadworthy inspections and tyre work.
Based in Medowie NSWServes Tomago
Closed · opens 8:00 am
Mechanics, Auto Electricians, Diesel Mechanics
Based in Heatherbrae NSW · serves Tomago
Mechanic in Heatherbrae, NSW for general servicing, rego checks, mechanical repairs and auto air-conditioning.
Based in Heatherbrae NSWServes Tomago
Closed · opens 8:00 am
Mechanics, 4x4, Tyres, Diesel Mechanics
Based in Salamander Bay NSW · serves Tomago
Mechanic in Salamander Bay, NSW for logbook servicing, brake and clutch repairs, diagnostics and wheel alignment.
Based in Salamander Bay NSWServes Tomago
Closed · opens 8:00 am
Mechanics, Auto Electricians, 4x4, Diesel Mechanics
Based in Raymond Terrace NSW · serves Tomago
Mechanic in Raymond Terrace, NSW for logbook servicing, brake and clutch repairs, and steering and suspension work.
Based in Raymond Terrace NSWServes Tomago
Closed · opens 7:30 am
Mechanics, Diesel Mechanics
Based in Medowie NSW · serves Tomago
Mobile diesel mechanic in Medowie, NSW, servicing plant and heavy vehicles on site across the Port Stephens and Hunter areas.
Based in Medowie NSWServes Tomago
Closed · opens 6:00 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics
Based in Anna Bay NSW · serves Tomago
Mechanical workshop in Anna Bay, NSW for logbook servicing, brake and clutch work, tyres, suspension and rego checks.
Based in Anna Bay NSWServes Tomago
Closed · opens 8:00 am
Mechanics, Auto Electricians, 4x4, Diesel Mechanics, Caravan Repairs
Based in Anna Bay NSW · serves Tomago
Anna Bay workshop for logbook servicing, brake and clutch work, rego inspections and trailer repairs.
Based in Anna Bay NSWServes Tomago
Closed · opens 8:00 am
Auto Electricians, Mechanics, 4x4, Diesel Mechanics, Towing
Based in Belmont NSW · serves Tomago
Auto electrician in Belmont, NSW for auto electrical repairs, air conditioning regas, alternators and dual battery systems.
Based in Belmont NSWServes Tomago
Closed · opens 8:00 am
Auto Electricians, Mechanics, Tyres, Diesel Mechanics
Based in Raymond Terrace NSW · serves Tomago
Auto air conditioning and mechanical workshop in Raymond Terrace, NSW, handling aircon repairs and regassing, radiators, exhausts and diagnostics.
Based in Raymond Terrace NSWServes Tomago
Closed · opens 7:00 am
Auto Electricians, Mechanics, 4x4, Diesel Mechanics
Based in Beresfield NSW · serves Tomago
Workshop in Beresfield, NSW for truck and trailer repairs, auto electrical work and diesel and plant repairs.
Based in Beresfield NSWServes Tomago
Closed · opens 8:00 am
Based in Beresfield NSWServes Tomago
Closed · opens 8:00 am
Mechanics, 4x4, Panel Beaters, Diesel Mechanics
Based in Beresfield NSW · serves Tomago
Custom garage in Beresfield, NSW for dyno tuning, engine performance upgrades, brake and suspension repairs, restorations and custom fabrication.
Based in Beresfield NSWServes Tomago
Closed · opens 8:00 am
Truck and bus repairer in Hexham, NSW, also selling new and used trucks, equipment and parts.
Based in Hexham NSWServes Tomago
Closed · opens 7:30 am
Mechanics, Auto Electricians, Tyres, Diesel Mechanics
Based in Beresfield NSW · serves Tomago
Mobile mechanic in Beresfield, NSW for logbook servicing, brake pads, batteries and tyres, coming to your vehicle.
Based in Beresfield NSWServes Tomago
Closed · opens 8:00 am
Auto Electricians, Mechanics, 4x4, Diesel Mechanics, Caravan Repairs
Based in Beresfield NSW · serves Tomago
Parts supplier in Beresfield, NSW for truck parts, clutch, suspension and brake components.
Based in Beresfield NSWServes Tomago
Closed · opens 7:30 am
Mobile truck and trailer repairer based in Seaham, NSW, servicing Newcastle and the Hunter Valley.
Based in Seaham NSWServes Tomago
Open now · 24 hours
Mobile diesel mechanic in Medowie, NSW for breakdowns, planned maintenance and logbook servicing.
Based in Medowie NSWServes Tomago
Open now · 24 hours
Truck body builder in Heatherbrae, NSW, making tipper and tray bodies, doing chassis work, repairs and custom modifications.
Based in Heatherbrae NSWServes Tomago
Closed · opens 7:30 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 27 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 Tomago. 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 27 diesel mechanics in Tomago NSW. 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 Tomago.
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.
