
How do you rate the E class 200 blue tech 151 and the C L S class 250 cdi blue efficiency Mercs, I'm a bit confused with all the logo , please advise on performance and reliability, regards Chris
Hi Chris,
It's the same engine in both - Merc's long-serving 2.1-litre four-cylinder turbodiesel. Its reliability is generally very good, but watch for turbos, DPFs and electrical gremlins and don't buy without a full service history. The different numbers just refer to power outputs. A 200 has 140hp while a 250 has 200hp. I know, that doesn't seem to make any sense...

Ask us anything motoring related and please provide as much information as possible so we can give you the most accurate advice.