A humming or whining noise from your Chery Tiggo 3 gearbox at highway speed usually points to low fluid, worn bearings, or CVT issues. Here’s what to check first and whether you can keep driving.
What's causing that gearbox hum?
First, don't panic — but do pay attention. A humming or whining noise from the gearbox of your Chery Tiggo 3 at highway speed is often a sign of worn bearings (input shaft, output shaft, or differential) or low/dirty transmission fluid. If your Tiggo 3 has a CVT, it could also be the belt/chain or valve body struggling. Manual gearboxes can whine when gear oil is low or the final drive is worn. The pitch usually changes with road speed, not engine RPM, which helps separate gearbox noise from engine or exhaust noise.
