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Message: <blockquote data-quote="salloom" data-source="post: 712695" data-attributes="member: 43112">Sorry to say guys, call it what you want but there is indeed a severe, almost dangerous "lag", "delay" to launch in our diesels. I was just two days back faced with a scary situation where I wanted to quickly launch the car out of a roundabout as a car was approaching and the delay in response, or lag (or whatever you call it) almost caused a massive accident.This is typical of diesel engines. Under 1,500RPM, diesel engines are almost empty, breathless and irresponsive until the turbocharger pumps in compressed air.Diesel engines are known to not be strong "racing" cars. The reason is the "sweet spot" band it too narrow, despite new turbochargers. Anywhere below 1,500/1,700RPM and above 3,800RPM, our engines are extremely weak.  And that's why you don't have diesel F1, NASCAR, Rally cars. Please make sure you drive accordingly. And yes, you are right, BMW's diesels have a very dangerous delay. I've driven (in France) for 2 years a Peugeot HDi and a VW TDI. They do have "lag", but not as significant as our 320d, even if you slam the pedal.As a matter of fact, slamming the pedal from an immobile position is extremely dangerous. However, if you are already coasting above 1,500/1,700RPM, that's when you have excellent linear acceleration.It's ok to say our diesels have faults...</blockquote>