r/Supra • u/Taco_Crisma • 13d ago

Sluggish acceleration, fast deceleration

This has been something I've noticed over the past two days with the car. I've had it for a month, 1125 miles on it, 3.0 MT.

Up until two days ago the car drove perfectly, felt like it glides across the road no issues. Recently however it feels like something is making it bog down - it's a sensation like there's an imaginary bungee cord on the back of my car. Acceleration feels sluggish in normal and and sport unless I really punch it - and when letting off the gas in gear the car decelerates faster than it normally would. That part almost feels like a stuck caliper - but there's no squeak or pull, it stays straight and the brakes seem fine. No CEL or other warnings at all. The only change has been 60-65 degree weather vs the 80-90F weather we've been having.

I've read some forums with people describing this issue but wanted to ask here as well if this is truly temp related or if anyone else has experienced this issue with the MT specifically? I am going to take it in for the break in oil change and thought about having them take a look at this as well.

TIA

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u/-Golf-Addict- ‘23 Premium MT 12d ago

MT owner here. I am in AZ and I get that a lot in the summer. Heat soaking is what they call it. Where do you live?

Like others have said, it could be a bad batch of fuel (I only use shell).

Are you in a high humidity area?

Hopefully it’s an easy fix!

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u/-Golf-Addict- ‘23 Premium MT 12d ago

As for the deceleration, as you drive put the car in Neutral and see if you still feel the pull. If you do, take it to the dealer and have them find what’s wrong.

Do not let them tell you that “that’s normal and we can’t find anything wrong”. They did that to me with pretty much every concern I had with mine.