In the UK the new i30 is being supplied with two 1.6 CRDi engines - one developing 81 kW/110PS and a more powerful version developing 94kW/128PS. Both engines produce identical torque @ 260Nm/192 lbs ft. Max power and torque figures are at the same speeds for both engines.
I have driven both versions - the 110 PS version feels sluggish compared with my present 115PS car and the 128PS version feels much more lively. A fair reflection of their respective power outputs I guess.
Yet - both engines in the Style version of the i30 emit identical levels of CO2 @ 100 g/km and have identical official fuel consumption figures which are :-
Urban 67.3 mpg = 4.2 l/100 km
Extra Urban 78.5 mpg = 3.6 l/100 km
Combined 74.3 mpg = 3.8 l/100 km
It seems strange that there seems to be no price to pay in economy for the more powerful engine - or is there?
In a recent magazine road test the actual fuel consumption for the 110 PS model was 57 mpg (5.0 l/100 km) and for the 128PS model 54 mpg (5.2 l/100 km) so in real life the more powerful engine uses more fuel - but this is not reflected in the government official economy tests.
It is looking as though Hyundai carefully mapped the more powerful engine so that the prescribed government test did not pick this up because during the tests both engines performed identically. Perhaps the more powerful engine does not reveal its power advantage at the speeds and acceleration rates prescribed in the tests.
Just wondering.........................
