23.5 mpg on 2.0 NC, help!

Technical Area Engine, Transmission, Exhaust etc
41

Hi Jac,

Just to reconfirm what @MickAP said: Those figures you quoted sound about right for a 2 litre NC.

Went out for a drive today and played with the mpg gauge a bit, was getting about 26 -30 around town (traffic wasn’t too bad), on b roads it showed 30-33 and on the motorway at 70 it was showing 36-40mpg.

If I’m driving in town traffic, I can easily see the MPG drop down to 28ish. And the first few miles after a cold start can easily be worse than that. And as you’ve found, 40 mpg is perfectly achievable on a nice clear motorway. Hope you’re enjoying your new car!

42

Thanks Nick, I’m having a blast, my only regret is not getting one sooner!

43

Thanks, not on my model it seems.

1 Like
44

Yes, the ND engine is an Atkinson cycle engine, where the expansion ratio is greater than the compression ratio. The expansion ration of 14:1 would probably cause detonation if were also the compression ratio. The exhaust will be cooler as more energy to removed from the gas, so I assume there may be advances in the catalytic converters.

45

Thanks for that. I have a bluetooth OBD2 reader, and a display app on my Atoto computer, which gives this information so I am not missing out.