How to fix a faulty gearbox in an Audi A4?

I have been experiencing issues with the gearbox of my Audi A4. The car jolts when shifting gears and there is a strange noise coming from the transmission. What could be the possible cause and how can I fix it?

It is possible that there is a problem with the gears or synchros in the gearbox. It is recommended to take your car to a certified mechanic for a thorough inspection and possible replacement of the faulty parts.

Another possible cause could be low or contaminated transmission fluid. Make sure to check the fluid level and quality and replace if necessary.

In some cases, the issue might lie in the gear selector or linkage. It is best to have it checked and repaired by a professional to avoid further damage.