Australia's directory of mechanics and motoring services
Describe the job once and we'll match it with up to 3 diesel mechanics in St Helens.
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.
16 diesel mechanics based in or serving St Helens; listings updated 7 Oct 2026.
Diesel Mechanics, Mechanics, Auto Electricians, 4x4
Saint Helens QLD 4650
Diesel mechanic in Saint Helens, QLD for truck servicing, diagnostics, brake and clutch repairs and pre-purchase inspections.
Saint Helens QLD 4650
Closed · opens 7:00 am
These businesses aren't based in St Helens but list it as a service area.
Diesel Mechanics, Mechanics, Auto Electricians, 4x4, Tyres, Towing
Based in Urangan QLD · serves St Helens
Diesel mechanic in Urangan, QLD for heavy diesel and 4x4 diesel work, earthmoving repairs and fleet servicing.
Based in Urangan QLDServes St Helens
Closed · opens 7:00 am
Mobile diesel mechanic in Lower Wonga, QLD, looking after plant and machinery on site, including rebuilds and breakdowns.
Based in Lower Wonga QLDServes St Helens
Open now · 24 hours
Diesel Mechanics, Mechanics
Based in Owanyilla QLD · serves St Helens
Mobile mechanic based in Owanyilla, QLD for roadworthy inspections, diesel mechanical repairs and on-site breakdown work.
Based in Owanyilla QLDServes St Helens
Open now · 24 hours
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics, Caravan Repairs
Based in Tinana QLD · serves St Helens
Car servicing and repair workshop in Tinana, QLD, for logbook servicing, brakes, wheel alignments and diagnostics.
Based in Tinana QLDServes St Helens
Closed · opens 7:00 am
Mechanics, Auto Electricians, 4x4, Diesel Mechanics
Based in Maryborough QLD · serves St Helens
Auto parts store in Maryborough, QLD, stocking brake pads, shocks, filters, oils and water pumps for cars and 4WDs.
Based in Maryborough QLDServes St Helens
Closed · opens 8:00 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics
Based in Maryborough QLD · serves St Helens
Mechanic in Maryborough, QLD for exhaust repairs, brake repairs, suspension work and logbook servicing.
Based in Maryborough QLDServes St Helens
Closed · opens 7:00 am
Mechanics, Auto Electricians, Tyres, Diesel Mechanics
Based in Maryborough QLD · serves St Helens
Diesel maintenance workshop in Maryborough, QLD for truck repairs, heavy vehicle wheel alignments and auto electrical work.
Based in Maryborough QLDServes St Helens
Closed · opens 7:30 am
Diesel mechanic and hydraulics workshop in Tinana, QLD for hydraulic hose repairs, system diagnostics and cylinder repairs.
Based in Tinana QLDServes St Helens
Closed · opens 8:00 am
Tyres, Mechanics, 4x4, Diesel Mechanics
Based in Bidwill QLD · serves St Helens
Truck, 4x4 and bus wheel alignment and balancing specialist in Bidwill, QLD, also doing suspension and mechanical repairs.
Based in Bidwill QLDServes St Helens
Closed · opens 6:30 am
Diesel Mechanics, Caravan Repairs
Based in Mungar QLD · serves St Helens
Gas fitter and plumber in Mungar, QLD for gas appliance installation, LPG conversions, hot water systems and leak detection.
Based in Mungar QLDServes St Helens
Closed · opens 7:00 am
Mechanics, 4x4, Tyres, Panel Beaters, Diesel Mechanics
Based in Tinana QLD · serves St Helens
Motorcycle service centre in Tinana, QLD for motorbike servicing, repairs, restorations and logbook servicing.
Based in Tinana QLDServes St Helens
Closed · opens 8:30 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics, Caravan Repairs
Based in Tinana QLD · serves St Helens
Mechanical repairs in Tinana, QLD for light and heavy vehicles, trucks and plant, auto electrical work and campervan and RV repairs.
Based in Tinana QLDServes St Helens
Closed · opens 7:00 am
Diesel workshop in Tinana South, QLD, looking after 4x4s, heavy vehicles and civil machinery for the Fraser Coast.
Based in Tinana South QLDServes St Helens
Closed · opens 7:00 am
Auto Electricians, Mechanics, 4x4, Diesel Mechanics, Caravan Repairs
Based in Tinana QLD · serves St Helens
Mobile auto electrician in Tinana, QLD for vehicle, truck and machinery air conditioning, LED lighting, 12 volt equipment and batteries.
Based in Tinana QLDServes St Helens
Closed · opens 9:00 am
Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics, Caravan Repairs
Based in Walligan QLD · serves St Helens
Mechanical workshop in Walligan, QLD for car and logbook servicing, roadworthy inspections, brakes and 4x4 work.
Based in Walligan QLDServes St Helens
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 16 on this page.
Showing 1–16 of 16 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 St Helens. 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 16 diesel mechanics in St Helens QLD. 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 St Helens.
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 Queensland, ask the business which qualifications and licences apply to your job. 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.
