Should I be concerned that my fuel economy is below the quoted MPG?

I purchased a brand new Hyundai Tucson Ultimate and I am generally happy with all the toys. But two big disappointments to me are the fuel economy and very hard ride. I did take a test drive and thought the mpg of the drive was due to the 'around town ' symptom. I have had the car three months now and driven 190 miles four times on motorways and with cruise control and not going much over 1500 - 1700 revs with a fairly smooth and soft right foot. My average mpg for all those rips has not got over 36mpg and considering my car is a hybrid I would have expected low to mid forties at least,

I bought through a broker and contacted him about this and he advised that this has come up several times with the Tucson and the official line is the mpg does not really improve until around 15,000 miles. I didn't think you still had to run in cars to that extent to get the best out of them. Am I missing something or is this a general view on Korean cars and Hyundai in particular?

Asked on 4 November 2025 by Tim Harte

Answered by David Ross
You can see what MPG other owners of this car have achieved in our Real MPG guide here - www.honestjohn.co.uk/realmpg/hyundai/tucson-2021 Tucson Hybrid owners have achieved an average of 46.4mpg, which is 93% of the official claimed fuel consumption. It is important to consider that the official MPG figure is derived from the WLTP test, which incorporates a mix of driving conditions and speeds.

Hybrids also operate at their best in mixed driving conditions, as on motorways the speeds are typically too high for the electric motor alone to power the car. Slower speeds and traffic, where braking will charge the battery and acceleration from lower speeds creates the opportunity for the electric motor to operate, which of course uses no petrol. Extending your braking distances in order to maximise regeneration and minimise the amount of work the actual brakes perform will also help to boost economy.

It is possible that the fuel consumption will improve with time as the engine loosens up although we are not aware that this affects Hyundais in particular. You may wish to take this up with the manufacturer, but we would expect them to explain that fuel economy will vary considerably based on driving style, atmospheric conditions and vehicle load.
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