Clutch drag caused by excessive movment in a failing DMF? But Toyota will probably deny this and say it's your driving. A Tech will take you for a spin to prove this. He will change gears slower than your grandad and tell you "nothing is wrong, Toyotas don't go wrong, they are bullet proof". My Toyota Main Dealer have written to me to tell me they do not have the expertise to diagnose what's causing my same symptoms because it's a Lexus (a car with a Toyota desel engine, cutch and gearbox! [yes the gearbox really is]. As the Transmission specialist said [about Main Dealers] - "They're just about OK for oil changes! Premises look good though and their staff wear shirt and trousers not dirty overalls"