Your transmission turns engine power into movement. Every gear change depends on clean fluid at the right level and pressure. Over time that fluid breaks down with heat, towing and stop-start driving. Worn fluid means harsher shifts, more wear and, eventually, a much bigger bill.

A regular transmission service is one of the cheapest ways to protect one of the most expensive parts of your car. Whether you drive a conventional automatic, a CVT, a DSG or a manual, Portland Tyre and Auto can service it, diagnose it and repair it.

7 signs your transmission needs attention

1. Slipping: the engine revs rise but the car doesn't speed up to match
2. Harsh, late or delayed shifts: a thump into gear, or a pause before drive or reverse engages
3. Shuddering or juddering: especially when taking off or at low speed, which is common with worn DSG clutches and CVTs
4. Whining, humming or clunking noises: noise that changes with speed or gear
5. Red or brown fluid under the car: transmission fluid leaks are usually red when fresh and darker as they age
6. A burning smell: often overheated fluid, particularly after towing
7. A warning light or limp mode: the car holds one gear to protect itself