CornishPasty

Got home yesterday evening and it was really noticeable that the engine bay had a strong burning smell.

I hadn't been pushing the car or driving at any great speed. I was in eco mode the whole time.

There is also a nasally type sound when accelerating, which wasn't there originally so not sure if it could be linked.

Any thoughts?

HorshamRebel

Does it smell like oil or plastic burning ?

CornishPasty

more like an oil burning smell

HorshamRebel

Check if there is any oil on the engine that will burn off, also check the colour of your exhaust. Might be it was topped up too much... Hopefully

bensales

Is it a diesel? If so, its just done a DPF regen cycle while you were driving. Nothing to worry about, and if you track your fuel consumption, you'll see a drop in mpg on that tankful. Mine seems to do them every couple of thousand miles.

HorshamRebel

Looking at his "Drives", it's a C250, so IS a diesel

bensales

Given he was in Switzerland, I wasn't sure if there might have been a petrol available.

HorshamRebel

True

parkwood

Have also experienced this a week ago but car was on a short run on narrow country lanes with an average speed of 60 to 70kph for about 5 to 8mins.......but i was not sure the om651 eu6 engine used a regenerative dpf?

CornishPasty

you were exactly right. I asked Merecedes to take a look and they confirmed it was a DPF regen