Mitsubishi Triton MQ and MR Buyer's Guide Sydney: The Value Dual-Cab, Bought Properly
The 4N15 2.4 diesel, valve clearances that get skipped, EGR and intake sludge, DPF data, chassis cracks and the 10-year warranty catch on the cheapest mainstream dual-cab.
The Triton is usually the cheapest of the mainstream dual-cabs on the used market, which is exactly why Sydney buyers should inspect one harder, not softer. The MQ (2015–2018) and the facelifted MR (2019–2024) share the same 2.4-litre diesel and the same short list of faults — most of them about maintenance that was skipped, not design. Here is what to look for.
MQ or MR
| MQ (2015–2018) | MR (2019–2024) | |
|---|---|---|
| Engine | 2.4 turbo-diesel 4N15, 133 kW / 430 Nm | Same |
| Automatic | 5-speed | 6-speed |
| Braked towing | 3,100 kg (check the compliance plate — some variants are rated lower) | 3,100 kg |
| Look | Rounded front | Squared-off front, LED headlights |
| Warranty | 5 years when new | 5 years, or 10 years with dealer servicing (2020 on) |
Super Select II four-wheel drive (full-time 4H on sealed roads) is standard on 4x4 GLS and above and is the feature that makes a Triton worth choosing over a part-time-4WD rival.
Known issues to check
- Valve clearances. The 4N15 uses a shim-and-bucket design and the service schedule includes valve-clearance inspection. It is time-consuming, so it is often "checked" without being measured. Tight clearances damage valves and the upper cylinder. We ask for the invoice that shows it was actually done, and we listen for the symptoms.
- EGR and intake sludge. Soot from exhaust recirculation plus crankcase vapour builds a sticky layer in the intake: rough idle, hard starting, lost performance and a check-engine light. A catch can is a good sign; a deleted EGR is illegal.
- DPF. Short-trip cars accumulate soot and drop into limp mode. Regeneration history and soot load are read on every tier.
- Intercooler pipes and O-rings. Split pipes and leaking seals cause boost loss and confuse the DPF system.
- Cylinder head and exhaust manifold cracks (MR). Reported around injectors (over-tightened on refit) and on the manifold — we look for coolant traces and exhaust soot at the joints.
- Chassis cracks. Overloading, airbags mounted between the spring hangers and towing fast on rough roads crack the rails. We inspect the full length with the tray clear.
- Shock absorbers. The original dampers wear early, fronts first. A mushy, bouncy ride is the tell.
- Manual gearbox jumping out of gear (MR). A known fault, usually covered under warranty — check the history.
- Infotainment. Bluetooth and CarPlay drop-outs and random restarts on MR; the stock stereo on MQ is poor. Not a mechanical issue, but a negotiation point.
- Modifications. Poorly fitted bar work, lifts and wiring are common on tradie Tritons and void the warranty.
What we check on a Triton
On Comprehensive and Elite the undertray comes off where it is fitted, safely accessible and permitted, so oil and coolant weeps at the timing cover, injectors and turbo are traced properly, and every bush and mount is inspected — Tritons that have carried a canopy and a load every day show it in the rear leaves and shackles. OBD-II scan on every tier: stored and pending codes, DPF data, live sensor values that reveal intake and boost faults. Cold-start listening for valve noise, check of intercooler piping, chassis inspection behind the cab, towbar and tray mounting, Super Select operation through each mode, brake and tyre life per corner.
The 10-year warranty catch
Mitsubishi's 10-year warranty applies only when the car has been serviced at a Mitsubishi dealer on schedule. One independent service and it reverts to five years. If the seller is quoting the 10-year cover as a selling point, the service book has to be dealer stamps all the way.
Approximate Sydney asking prices, September 2026
| Example | Typical asking |
|---|---|
| MQ GLX+ 4x4 auto 2016–2018, 120,000–180,000 km | $22,000–$30,000 |
| MQ GLS 4x4 auto 2017–2018 | $27,000–$34,000 |
| MR GLX+ 4x4 auto 2019–2021 | $28,000–$36,000 |
| MR GLS / GSR 4x4 2021–2023 | $36,000–$46,000 |
Which inspection to book
Comprehensive ($329, or $296 with code SAVE10). The valve-clearance history, EGR condition, DPF data and the chassis are the whole decision on a Triton, and all of them are in the Comprehensive scope. Elite is worth it on a GSR or a late MR with accessories, for the on-site negotiation and written repair cover of up to $3,000 for 30 days.
Common questions
Is the Triton reliable?
Yes when serviced properly, which is the catch: valve clearances, EGR cleaning and DPF-friendly driving are all maintenance items owners skip. The service history tells the story.
MQ or MR?
MR for the 6-speed auto and the LED headlights; a well-kept MQ is the value buy.
Does a catch can void the warranty?
A properly fitted catch can does not delete anything and is generally accepted; an EGR delete or DPF removal is illegal and does void it.
How much is the valve-clearance service if it is overdue?
Expect several hundred dollars at an independent specialist for the inspection and shims — a fair negotiation point if the invoices are missing.
Lock in your inspection
Book a mobile pre-purchase inspection at the seller's address. Same-day slots across Sydney from $199, with a written repair cover on Elite (30 days / up to $3,000).
Mobile inspections near you