Southern Diesel & Mechanical Pty Ltd delivers expert diesel mechanic services, truck repairs, heavy vehicle maintenance, and fleet servicing — operating from the Greenwood/Warwick area and supporting commercial operators across Perth and Western Australia.
All makes and models of heavy trucks
Complete diesel engine rebuilds
Scheduled servicing programmes for commercial fleets across Perth and regional WA
Advanced electronic fault-finding
Earthmoving and mining equipment
Fully accredited diesel mechanics
Trucks, buses, trailers & earthmoving
Minimise downtime for your fleet
Servicing Perth, WA & regional areas
From routine servicing to major engine overhauls, Southern Diesel & Mechanical provides a complete range of diesel and heavy vehicle repair services — keeping Perth's commercial fleets on the road.
Full diesel engine diagnostics, repairs, and rebuilds for trucks, buses, and heavy machinery — all makes and models.
Scheduled maintenance and safety inspections for prime movers, rigid trucks, trailers, and road trains.
Customised fleet servicing programmes designed to reduce downtime and extend vehicle life for commercial operators.
Advanced computer-based fault-finding for modern diesel engines, ECU tuning, and emissions system troubleshooting.
Heavy vehicle brake repairs, air-brake servicing, suspension overhauls, and steering system maintenance.
Diesel mechanical services for excavators, loaders, dozers, and mining/construction plant equipment.
We combine decades of hands-on diesel experience with modern diagnostic technology to deliver repairs that fleet managers, owner-drivers, and commercial operators trust. Every job carries the integrity of qualified, experienced tradespeople.
Our team holds trade qualifications in diesel mechanics and heavy vehicle maintenance, with ongoing training on the latest engine platforms and diagnostic systems.
We understand that every hour off the road costs money. Our workshop is structured for fast turnaround without cutting corners on quality or safety.
From Kenworth, Volvo, and Scania to Isuzu, Hino, and CAT equipment — we service the full spectrum of diesel-powered vehicles and machinery.
No hidden charges. We provide detailed written quotes before commencing work, and keep you informed at every stage of the repair process.
"We run a fleet of 30 trucks out of Welshpool and Southern Diesel have been our go-to workshop for three years. Fast turnaround, honest pricing, and they genuinely understand the pressures of keeping a fleet moving."
"Had an engine failure on one of our Kenworths mid-contract. Southern Diesel diagnosed the fault same day and had us back on the road within 48 hours. That kind of response is invaluable in our industry."
"Our bus fleet relies on scheduled maintenance that cannot slip. Southern Diesel built a servicing programme that fits around our timetable, and they have never missed a deadline. Highly recommend."
Whether you need a one-off repair, a major engine rebuild, or an ongoing fleet maintenance programme — get in touch with our diesel specialists today.