Hi Lloyd and welcome. If you have a link to the advert, post it up here and then someone will have a look and give you some further views.Think it's just amg spec ie suspension and various trim bits etc I'm looking at 2014 slk cdi amg spec with 50k and full history
70% 0f the SLC's sold are 250d's, I have one moved from a SLK200K.Why would you want a 2 seat convertible "sports car" with a diesel engine - many (me included) think that's a bit of an oxymoron! Unless you plan to do high mileage, IMHO you'd be better looking at an R171 or R172 3L+ petrol V6 or V8 - I have an R171 SLK280 3L V6 petrol and the engine is superb!
Airscarf is a must, as is the wind deflector, full leather heated seats, and if poss memory seats (the only part of my wish list I missed out on). Also try the ride compared to wheel sizes - my 171 on 17's is a bit firm and I'm contemplating changing to 16's, I've seen that on 18's it's very firm.
I really love my 280 on 16" wheels, makes a very nice noise and is fast and comfortable enough on the roads we have, rather than the roads we wished we had...I'd say you can't get better than our SLK r171 for performance with 306bhp on tap (unless you say SLK55 AMG then you need lots of money for those) it does go quite well and corners good too, only the ride comfort is compromised with the 18" wheels and flaming pot holes in the Fenlands
If I had the chance to sell the Missus SLK I would, but she was against changing it for a r172 50mpg 250 CDi SLK, her response, 'Err diesel'
https://forums.mercedesclub.org.uk/index.php?threads/m014-increased-engine-performance.123302/Good grief ..................