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W203 Reliability?
I have a 2003 C230k the only major issue I had was the leaking Cam Sensor. And right now at 80,000 my alternator is going.
Other than that a pretty solid car.....
Last edited by bigspender101; Jan 30, 2011 at 02:53 PM.
Also, looked like a good chunk of data was missing. I see you drive one, what has been your experience with it?
I've had issue with my 2003, some minor/some major, but overall it hasn't been too frustrating. (knock on wood)
if you are looking for ultimate reliability, look toward Japanese.
High end Germans, great as they are, to me too over engineered for their own good.
just too many dang parts to accomplish a single objective.
I still love my baby Benz though.

W203 is still one of my favorite body styles.
if you are looking for ultimate reliability, look toward Japanese.
I would rather the unreliable German or Swedish vehicle over ANY ricer, any day
Anyone know anything about the wagon?
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I've heard that 2005+ are the years you want (I hope they're right!
). The 6 cylinder engine in my wife's car is a lot smoother than the 4 in mine but my 4 isn't at all what I would call rough. It's just that I'd call the 6 silky smooth
! My wife has the automatic which is also very smooth. My car has the 6 MT. I can't say I'm in love with the tranny, but it's ok. The relationship between the gas and brake pedal isn't very good for heel-toe but it's passable. Mine seems to get a lot better gas mileage, but I do a lot more highway driving than she does. Still, we are a little disappointed with the mileage and it will be something we address at her next service.
Overall, we like our C230s a lot. My wife wishes hers were a bit bigger - partly because she used to drive a mini van and needs a place to store all the junk she's used to carrying around. I haven't enjoyed a car this much since I had my Ford Probe GT. In fact, so far, I'd have to say my C230 is probably my favorite car ever (my Lotus is in a different category. It's sort of family!). I know this isn't a very long term report, but hopefully it provides a data point or two. Good luck in your search!
Not discouraging a Mercedes by any means, and I love both of ours, but they require more frequent attention and adjustment compared to the Honda's and Toyota's that I have owned in the past.
Mercedes has recommended services, and although the cars are over engineered in many ways, the services are exactly what and when they expect it to be done. It doesn't have to be done by the dealer, but it does need to be done. The other thing to keep in mind is that a service is frequently more than just an oil change, if it is done properly. They call for a lot of checking things, that really ends up being making sure bolts are still torqued right, or little things like cleaning and lubing the sunroof tracks.
Many people on the forum are very successful in maintaining their vehicle, but the thing you have to keep in mind is that they all are the type people (just my opinion) that either keep the vehicle in exceptionally good condition, or are the type that will notice things that need to be done (for example the sunroof lube) even if they don't do them at the time for an oil change.
-the front suspension (all the bits have been replaced under warranty, clunking and knocking), There are definitely problems here and the replacement parts all have a 204-xxx-xx part number now. (trust arms, ball joints, sway bar links, tie rods etc)
- left front wheel bearings (did it myself - kit is $59)
- my alternator throwing a malfunction code even though it seems to be doing its job and voltages are too spec;
- a leaking cam solenoid (what else is new!) might have to fight MB Canada on this one
- Sticking parking brake (due to pre-mature corrosion in the mechanism- I free'd it up and it is fine for the past 2 years).
- Leaking diff seals where the half shafts come out (warranty).
- The I-R on my drivers outside door handle for the remote does not work i.e. for the windows)
- Bad rear speaker ($65 to buy the individual speaker)
- The car goes through rear tires (staggered set) at a 2:1 ratio compared to the front (I don't do burn-outs)
- with 99,000KM I have replaced the front rotors and pads twice (an extra one that I did not expect), and the rears once
- replaced the OEM battery recently as a preventative, it was still strong after 7.5years
- front fender liner broke apart (?? part was $38)
Other than that the car has been fine, I had a issues with my Acura (bearings, rear calipers multiple times, rad, steering wheel controls, warping front rotors constantly, rusting out exhaust component and premature rusting on the body) so I don't think any car is immune to problems. I had a Ford Probe GT and that was a nightmare - never again an American or Mazda product
The Benz is a more satisfying car to drive. Compared to my friend's 07 530ix my Benz seems bulletproof, that car has been a disaster
Last edited by Boom vang; Jan 30, 2011 at 08:03 PM.
If you're smart and savvy, you can maintain these cars at a reasonable cost.

I haven't really had any serious problems (touches wood) with my '94 W124 E Class (which I love), so I think it's natural to be wary of some of the newer cars.
Thanks though, all this information really helped, glad you guys are (for the most part) enjoying your w203's!
Atleast that's the way I feel.
I think their working with Mexico again. I remember in 2002 Mexico's plant was closed but I guess it's time to outsource.
http://www.buzzle.com/articles/gm-ch...to-mexico.html
Last edited by W203E35; Jan 31, 2011 at 10:20 AM.





