LDV Mifa 9 Pricing and Specs

Let’s start with the concept of a dealership charging for a problem that is probably a warranty claim in the first place. Warranty repairs shouldn’t cost the owner anything, so the dealership is skating on thin ice in the first place.

But secondly, this doesn’t sound like a problem at all. In fact, I’d say it’s perfectly normal behaviour. What’s happening is that the car’s computer is looking at how much fuel the vehicle has used in the immediate past, and calculating how far you can go on the fuel you have left, at that rate of consumption. When you switch from stop-start running to highway driving, your consumption per 100km falls. When the computer notices this, it recalculates how far you can go with your reduced consumption, and the estimated range on the trip-computer goes up.

Fuel range is the inverse of fuel consumption, when consumption goes down, range goes up. And since the car’s computer models the range based on your recent consumption rate, highway running will usually cause the range to creep up. Eventually the range will plateau and then begin to fall. When you hit the city, the range will begin to fall more quickly. The dealership should have been able to explain this to you rather than threatening to charge for taking a look at it.

It’s not a problem and is actually completely normal. What’s happening is that the car’s computer is detecting that the engine or transmission (or both) are hot enough that they need a little extra cooling. That’s why the electric fan comes on. It stays on for a minute or so after the engine is shut down to try to bring down temperatures a little more in anticipation that you may return to the car and restart it in the next few minutes.

It’s not that the vehicle is overheating, but modern cars are all about efficiency and thermal management is a big part of that. The fan is more likely to come on if you’ve just spent a few minutes idling at a red light or driving slowly through a car-park to your eventual parking spot. Low (or no) speeds mean there’s little to no air passing through the car’s radiator, so the fan switches on to create some airflow of its own.

The first question is have you tried changing the setting on the throttle controller? The U4 setting on this unit is slightly towards the lazy side of throttle response. Maybe a switch to U8 or U9 will give the throttle response the perkiness you are looking for.

A poor quality snorkel can definitely impede airflow and, therefore, power production, but so can a poor tune, dirty fuel filter, worn injectors, worn fuel pump, a blocked DPF, gummed up intake manifold and about a thousand other things. Is the turbocharger working properly and all the associated plumbing tight and leak-free? This can also cause a loss of power due to lost turbo-boost.

You really need to have a fiddle with the throttle controller to determine whether the problem as you see it is a lack of throttle response or, indeed, a lack of performance in an outright sense. For the record, 11.1 litres per 100km is not, depending on how and where you drive, unusual for this vehicle.