The engine is very refined for a 4 cylinder diesel and wont shake at traffic lights at all.. because the engine shuts off. It has clearly been designed to work as a town car and works very well - I'd
I have been out in both the Cooper D and Cooper twice now the first time I was just out in the D then a week later took a petrol out. Recently I took both out right after each other.
Noise wise they both sound much the same, and certainly better that the Cooper S that does actually sound like an old diesel. My view was that there was not much noticeable difference inside with only a slight hint out side. They both took off much the same.
The kicker is that and this is from people that have both D for there wife and S for themselves that the D has the same torque as the S and is just as quick between 40-70 with exceptional over taking.
As discussed the old One D I’ve never been out in one but its only a 1.4 and this Newer Cooper D is a totally different beastie
Engine: 1.6 litre, 4 cylinder/16 V
Max. output/hp/revs: 110 hp at 4000 rpm
Max. torque: 240Nm between 1,750 and 2,000rpm
260Nm at 2,000rpm with Overboost
Acceleration 0-100 km/h: 9.9 s
Top speed: 121 mp/h
Fuel consumption (combined)¹: 64.2 mpg
CO2 emissions¹: 118g/km
Transmission: 6-speed manual