Hi All,

Had my W204 for few weeks now but its developed a strange intermittent stutter.

When hot and on a motorway speed drive, normally between 65 & 75mph it stutters for a fraction of a second. No warning lights on. Doesn't do it at all in urban type environment only on very light throttle under load, hills etc at motorway speed, can drive through it and only does it very occasionally, haven't noticed it when on cruise control which is strange.

Any thoughts? I haven't had it plugged in yet.

Thanks

About how many miles ??

110000 miles

use a scanner to diagnose or replace your "exhaust back pressure sensor"... a long name for a little troublemaker 👍