C-Class W205 Petrol Manual Transmission Hesitation or Gear Slipping Around 3000 RPM

[engrol]

Salutations Everyone, A 2016 C200 SE with a mere 59,000 miles on the odometer is now mine. It usually drives smoothly and quickly when you want it to, but there's a problem I've been noticing. (I will return to the independent garage from whom I purchased if anyone can suggest a possible solution to my problem.)


As I accelerate to around 3000 rpm, I see that the rev counter decreases and then shoots back up, giving the impression that the gears are slipping. Additionally, you could notice that the gear change indicator thing momentarily appears. You can get past the strange hesitancy, but it won't inspire much confidence if I want to overtake you.
If I'm in third gear and want to get on the highway, but I don't shift up, the car will stall between 2500 and 3000 rpm. It does the same in fourth and fifth gears as well.

The automobile forces you to take short shifts, so the rpm don't reach very high anyway, even though it seems fine on normal driving.

I understand that I need to contact the seller, but I would appreciate it if someone else could provide more information so that I can get a better diagnosis based on my inadequate description.Please let me know if anyone can assist; I'm happy to provide additional information if necessary.

[Lovelyas]

At 40,000 miles, you should change the oil and filter.

[Authorce]

With a manual gearbox? It is unclear, but it is what the original poster implied in the title of the post.

[Authorce]

Does it have an automatic or manual gearbox? Contrary to what you said, a manual gearbox cannot slip; nevertheless, the clutch may.

[engrol]

This is a six-speed manual gearbox truck. The clutch is sliding, I apologise.
With a little more force, it reaches about 3,000 rpm, then abruptly decreases before continuing.


The dashboard is error-free, and the car should have been maintained before being handed to me, but I can't verify the exact details.

[Mututing]

If the engine speed increases as you approach peak torque and then decreases as you decelerate or exceed peak torque, it's quite probable that your clutch is Donald Duck-y.Putting it in top gear at approximately 50 makes it somewhat labour, which is another test. Be sure not to take your foot off the throttle while you swiftly depress the clutch pedal and then release it. The engine should rev quickly before lowering with a thud when the clutch is fully engaged. If the revs take a while to fall back down and they do it with a slur, it's time to change the clutch.

[engrol]

It doesn't make much noise, and the main problem is that the RPMs dip suddenly before they level out again. Which is illogical because, as you point out, the revs should increase before lowering when clutch slip is present.
At some time in the future, I will probably meet with a mechanic, but until then, I should try to record it happening so I can study it better.


The vehicle has a clean service history at an MB garage and very little mileage, so it's a real bummer.

[Authorce]

What matters most for early clutch wear is how the clutch has been handled by prior owners, not the mileage or history of the vehicle.

[Lemmand]

I would be more concerned about an ignition problem if the indicated revs suddenly dropped. When shifting gears, under what conditions might the engine speed decrease as a result of a slipping clutch? If the gear indicator warning light comes on, it's likely because the car has detected the stated decrease in revs and believes you're trying to overwork the engine.


The car would slow down if the engine rpm suddenly drop, so it's possible that the revs are hesitating rather than dropping. However, since the tacho and gear indicator advisory are powered by ignition pulses, they can be influenced by a misfire. It is necessary to read the code that is thrown when the ignition fails to work.

Sixth gear on my six-speed manual gearbox allowed me 30 mph at 1000 rpm, fifth gear 25 mph and fourth gear 20 mph. By comparing the pace at which the engine is revving in relation to the revolutions per minute (rpm), you should be able to identify clutch slip.

[Inspirli]

It seems like a dual mass flywheel is about to break. Have encountered the issue with two Peugeots previously. Quite pricey. Offered them to a major dealer for sale.