transmission gearbox on 2005 Volvo S40

i feel my car jerking and sometimes feels hard to drive. please advice

Asked by for the 2005 Volvo S40
The problem could be for many different reasons.
You really need to get it diagnosed by a Volvo specialty shop to see what causing the problems. They should be able to pull out diagnostic trouble codes from the affected modules and be able to estimate the parts and repair cost for you.
Most generic diag. computer tend to display false codes on Volvo, that's why I suggest a Volvo shop.