Mitsubishi Triton Engine Problems

The new car warranty was for five years or 130,000km, so while it still meets the time part of the deal it's beyond the kilometer limit. Any extended warranty you have would have come from the dealer rather than Mitsubishi, so you would have to read the warranty conditions to know if the turbo seals are covered. I would expect they are if they fail because of being faulty.

Check the warranty document, which should tell you what is specifically not covered. Normally it’s the consumables that are not covered, that’s things like oil filters, air cleaners, spark plugs, belts, brakes and clutches. Fuel injectors don’t normally fall into the consumable category.

It would seem that there is an electronic issue with your car; the challenge for the dealer is to find the cause so it can be fixed. The car is still in warranty so you should be pressing the dealer and Mitsubishi to fix it, and fast. Go back to the dealer and find out when the Mitsubishi rep will be checking your car. If you get no satisfaction from the dealer, go directly to Mitsubishi's customer assistance people (Ph: 1300 13 12 11) and explain your problem to them.

From what we can see, that specific Triton carried an official combined fuel consumption figure of 10.9L/100km. 

In the real world, you can expect to achieve a similar number on a constant highway cruise, but be prepared for it to climb to something more like 15L/100km around town. So more like a six cylinder modern Falcon or Commodore than a Corolla or Mazda3. 

If the suction control valve is worn or there is contamination present the fuel pressure will be affected and so will the drivability as a consequence. The car will sometimes go into limp home mode when this happens. It is a relatively common complaint on common-rail diesels, and the only thing to do is to replace the valve.

Driving through puddles is not a problem, but driving through a creek or river could be problematic depending on the depth of the water. This is a case of you say, they say. I would suggest you sit down with your dealer and ask him to show you evidence of the water ingress they claim has occurred. Then try and reach an agreement with them and the car company on what they might do for you.

You’re going to be hard-pressed to show that the problem was either a design or manufacturing problem, as it’s unlikely to be either. Even though the wiring loom just sits and doesn’t appear to be subjected to any stress it being subjected to all the bumps, vibrations and whatever else is happening through the vehicle in general. It could be a faulty connection; it could be any number of things. Pay up and get on with your retirement.

Mitsubishi quotes a combined average of 10.9 L/100 km for the 2.4-litre dual-cab Triton. Around town they claim 13.9 L/100 km and on the highway 9.1 L/100 km. It’s similar to other dual-cab utes.

By how far did you miss the service? Was it by a 1000 kilometres or so, or did you miss it all together? If you missed the service by a few weeks or a few kilometres then I would not expect the engine to seize, but if you skipped the service completely I’m not surprised. I’m also guessing the warranty won’t be honoured because of the missed service, but depending on the circumstances surrounding the missed service you could try and negotiate with Mitsubishi for some cover.

The claimed average for the Triton diesel is 9.6 L/100 km, the claimed consumption for urban driving is 11.9 L/100 km, for highway/country driving it’s 8.3 L/100 km. That, of course, is the result of a laboratory test, not a real world one, so you have to allow for some variation.

You also have to allow for some variation due to loading, driving style, road conditions, tyres and the general state of the car. I’d recommend that you keep accurate records of the fuel used so you have the data to present to the dealer, and to Mitsubishi. If your data shows the car is not performing as they claim it should ask them to rectify it. Should they refuse approach the consumer affairs people with a claim that the vehicle as supplied to you is not what was represented to you.