Gear change to fast at lower rpm
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Joined: Dec 2019
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GLA250 H247, C300 2019 Coupe
Gear change to fast at lower rpm
why my car change gear too fast at lower rpm, up to gear 7? it can shift down automatically but cannot use shifter to manualy shift down.
i am practically like limp mode, can't shift down. luckily it shift down to 1 when i stop.
i just change gear oil about 3 wks ago. at that time all ok. my car is weekend car, seldom drive.
i am practically like limp mode, can't shift down. luckily it shift down to 1 when i stop.
i just change gear oil about 3 wks ago. at that time all ok. my car is weekend car, seldom drive.
Out Of Control!!
Joined: Nov 2018
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From: San Francisco Bay Area
2019 C63CS
In the normal Comfort mode, most cars will upshift quickly to reduce fuel consumption. That's how it is. Keeping the engine at low rpm prevents the turbos from spinning up and producing boost, which would require more fuel. That's the dirty secret about small turbo engines. They lug along at low rpm to keep fuel consumption low. Have you tried putting it in Sport or Sport+? It won't be super sporty, but it'll stay in lower gears longer. Also, are you saying the shift paddles on the steering wheel aren't working for you to manually downshift? If so that would be a malfunction. You should always be able to temporarily downshift by pressing the left shift paddle.
Last edited by superswiss; Aug 22, 2025 at 12:12 PM.
Thread Starter
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GLA250 H247, C300 2019 Coupe
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Out Of Control!!
Joined: Nov 2018
Posts: 11,398
Likes: 5,322
From: San Francisco Bay Area
2019 C63CS
Problem with the engine, not the transmission then. No signs of engine problems before? A transmission service has nothing to do with the engine's fuel system, so sounds like a coincidence.
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GLA250 H247, C300 2019 Coupe
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S65
I'm so confuzzled...
OP's first post mentioned Not being able to shift down, didn't specify via gear selector or paddles. Then, tells us he had GEAR OIL service. Is he referring to transmission service or differntial service?
Now, he's saying the fuel pressure is low?
Christ, I get English isn't the guy's first language, but come on, this is a low effort OP for someone who actually wants some help from us. Google translate is a thing.
OP's first post mentioned Not being able to shift down, didn't specify via gear selector or paddles. Then, tells us he had GEAR OIL service. Is he referring to transmission service or differntial service?
Now, he's saying the fuel pressure is low?
Christ, I get English isn't the guy's first language, but come on, this is a low effort OP for someone who actually wants some help from us. Google translate is a thing.
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Joined: Jun 2025
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I'm so confuzzled...
OP's first post mentioned Not being able to shift down, didn't specify via gear selector or paddles. Then, tells us he had GEAR OIL service. Is he referring to transmission service or differntial service?
Now, he's saying the fuel pressure is low?
Christ, I get English isn't the guy's first language, but come on, this is a low effort OP for someone who actually wants some help from us. Google translate is a thing.
OP's first post mentioned Not being able to shift down, didn't specify via gear selector or paddles. Then, tells us he had GEAR OIL service. Is he referring to transmission service or differntial service?
Now, he's saying the fuel pressure is low?
Christ, I get English isn't the guy's first language, but come on, this is a low effort OP for someone who actually wants some help from us. Google translate is a thing.
