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My 2013 Mitsubishi Triton has always used excessive fuel. I regularly get returns of 14-15 L/100 km, on both highway and town driving.
At first the dealer agreed that this was "excessive" and they tried their best to sort it out. Finally, around four months ago, they agreed to take it for a drive to investigate. After filling the tank it was driven 50 km out on the highway and back again. At the completion of the 100 km trip, they refilled the tank with 11.6 litres. Mitsubishi's response was that this was within "parameters", even though it was 42 percent more than their claimed usage of 8.1 L/100 km.
Do I have cause to take this any further with Consumer Affairs, or somewhere similar, or do I just have to accept their response?
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.
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