Absolutely, legal damages date from Roman times. In fact, modern tort law or your common law right to seek damages for a wrong which someone commits against you is based on the Roman law of Lex Aquilia. The dieselgate class actions (and if you decide that your case against VW is strong enough to sue them for civil damages in a court of law) is based on this ancient Roman law. However, discrete laws to protect consumer rights only came into being in the mid-20th century, which has given us specific rights to a repair, replacement or refund as well as compensation for damages and loss and being able to cancel a faulty service. If you do not understand the difference then you need to get a legal professional to explain the difference to you.

If you believe that the repairs that you paid for are covered by legislated warranties then you should get some profession legal advice on whether you have a case to take on VW to have these warranties enforced under consumer rights laws / contract law or whether you have a case to seek civil damages under common law. VW, like any other vendor, have a the right not to extend to you any warranties beyond the legislated warranties or those that they have agreed with you in the contract with you. There are many vendors who will go above and beyond what they are required to do by law but this is their choice and they can choose not to do it for you. You are not entitled to anything beyond what is in the laws of the land or in your contract. If you believe that the legislated warranties need to be extended then speak to your local member of parliament, they will be more likely able to assist you than the members of this forum.