How many miles or kms have you clocked your W203 ?
Original motor, original trans. Slips between 3rd and 4th after a recent trans fluid/filter change I just did, and the valve cover gasket leaks a little bit. Other than some suspension parts, two hid ballasts, and a crankshaft position sensor I've had to replace, everything else is original and operating perfectly. Easily the most reliable car I've ever owned. Planning an engine/trans/suspension rebuild, and new header back exhaust kit. I'm thinking she'll run another 250k, with some added hp! Keep your w203's! They're a treasure.
1. New Bosch Alternator & new battery. A lot of threads out there recommended changing out the regulator on the existing Alternator. I'd say, if you're going to remove that sucker altogether, you might as well replace it entirely.
2. All new Brembo rotors and Brake Pads.
3. Fresh Oil Change with Liqui Moly engine flush, Mobil 1 0w40 with the addition of Liqui-Moly CeraTec friction modifier.
4. Fixed both left/right side mirror LED signals.
Car is purring like a kitten.
Things I know I need to replace soon: I have had intermittent issues with my crankshaft position sensor (or at least I did over the summer, Vegas gets hot! I only had issues a few times after driving for a while in the summer and the engine gets really hot. If I didn't let it cool down enough before trying to start it again, it would just sit there and try to start but would just crank). I have the new crankshaft sensor but I haven't had any issues with the current one, so I'm holding off as I need to order some tools to do it. My coolant level sensor doesn't work, or that's what I was told when I had it checked by a Euro shop, so I get coolant error messages sometimes. I'm thinking of replacing the radiator to avoid the possible leak issues that the earlier W203's had. I haven't noticed any of the symptoms of coolant getting into the transmission, but I'd rather only pay for a new radiator now instead of a new transmission in the future!
The Best of Mercedes & AMG



I recently bought my c230K due to the low mileage, and have been very happy with its performance, so far!..





Car still runs great other than a minor suspension squeak and some oil consumption (1L every ~2000 km). Pretty much no rust at all.
Local dealership had never heard of this award program before. Receptionist gave me a blank look, then tried to locate a sales guy
The SA who verified my mileage said the highest example he had seen around here was ~300k km on an E class, which was traded in not long after.Looking forward to many more years with this car, as well as the nice shiny grille badge.
Last edited by slammer111; Apr 4, 2023 at 05:08 AM.





Car still runs great other than a minor suspension squeak and some oil consumption (1L every ~2000 km). Pretty much no rust at all.
Local dealership had never heard of this award program before. Receptionist gave me blank look, then tried to locate a sales guy
The SA who verified my mileage said the highest example he had seen around here was ~300k km on an E class, which was traded in not long after.Looking forward to many more years with this car, as well as the nice shiny grille badge.





Very close to starting the head gasket project. M111 was finally leaking so bad (after 100K miles of slow leak)
into the engine compartment, it soaked the cabin air filter, fogged the windshield, and
well probably will fry my kidneys if I keep driving it, so it's time. Funny though, it's running great!
Been researching and getting up on what to do.
So many great resources now, I feel fairly confident. Knock on wood.
I'll be posting on that once I start.

Car still runs great other than a minor suspension squeak and some oil consumption (1L every ~2000 km). Pretty much no rust at all.
Local dealership had never heard of this award program before. Receptionist gave me a blank look, then tried to locate a sales guy
The SA who verified my mileage said the highest example he had seen around here was ~300k km on an E class, which was traded in not long after.Looking forward to many more years with this car, as well as the nice shiny grille badge.





Apparently it was completely backordered. This is actually the 2nd one - they mailed the 1st one to the wrong address. 
The certificate is larger than expected. (letter size)
MB mileage award folder
MB 250k km award
Still deciding if I should install it onto the grille, as well as where to install it exactly.
Last edited by slammer111; Jan 29, 2025 at 12:17 AM.




Had to fiddle with the height a bit because the grille is partially split between the hood and front end. Interestingly enough, the threaded rods fit perfectly through the holes. Wonder if that was intentional. With the height out of the way, there is only really 1 spot to install the badge, at the vertical slat. Next slat over is reserved for 500k km. 
This thing is pretty solidly made. Hopefully it doesn't chip/peel or loosen and fall off over time. Added some threadlocker before installing. Also cut the rod lengths a bit, though it technically isn't necessary for the car.
250k km badge installed
Last edited by slammer111; Jan 29, 2025 at 03:22 AM.
Had to fiddle with the height a bit because the grille is partially split between the hood and front end. Interestingly enough, the threaded rods fit perfectly through the holes. Wonder if that was intentional. With the height out of the way, there is only really 1 spot to install the badge, at the vertical slat. Next slat over is reserved for 500k km. 
This thing is pretty solidly made. Hopefully it doesn't chip/peel or loosen and fall off over time. Added some threadlocker before installing. Also cut the rod lengths a bit, though it technically isn't necessary for the car.
250k km badge installed
The high mileage badge looks almost color-matched with your coupe
I'm still inching my way to that goal. 135k from my dad, and 4k from me.
Hopefully, doing my head gasket means the car will last me another 22 years.
Before I ripped the motor apart...
My 2005 C230K 6MT Sedan is a couple hundred miles away from the 160,000 miles. All maintenance, repairs, and custom/cosmetic work conducted myself (with the exception of ext. paint and tires). Just hit 10 years of ownership; bought her at 83k miles. I'll drive this car forever if I can!
Last edited by Norsk_Johnson; Feb 26, 2025 at 05:26 PM.







