Can an MOT pass prove the car had no engine faults?

Hope you can help! I bought a Seat Ibiza a year ago. Got a large 2 inch scratch across the windscreen as I drive it away questioning the MOT, and after 6 weeks the timing chain failed causing a cylinder 4 misfire recorded by the RAC. The garage I bought the car from agreed to repair the faults and timing chain for £180 the cost for the parts. The car continued to have ongoing intermittent EPC faults but no engine mgt light came on. Until the beginning of September. RAC recorded a cylinder 4 misfire again but couldn’t diagnose the serious issue. After rejecting the car I agreed to let the garage tow the car to their site and inspect the car. At this time they also without my permission allowed someone to inspect the cars emissions who did the original MOT. I have progressed to small claims who have now fast tracked my claim. He is relying on the MOT (and emissions) as prove the car wasn’t faulty at time of sale however the MOT doesn’t check engine parts. Will the MOT hold up in court? Thanks