To me that's looks like undue force has been used to create that hole. It would be nice to know what is the prescribed force allowed to check for rust.
Found this link to The Testers Manual that explains exactly how examiner should assess corrosion - very useful http://www.motuk.co...._appendix_c.htm
I would report them to DVSA under there appeals system.
https://www.gov.uk/g...our-test-result
If the car was in for a retest then it should only have been tested for the previous failed items and then given a pass. If they have found more problems then they did not do the test correctly the first time. Either way they have not followed the correct procedure and VOSA would probably be interested to hear about a dodge MoT tester.
http://www.mottestin...ation-fail.html
If Your Vehicle Fails Due to Other Items If the vehicle is left at the MOT testing station for repair and is retested before the end of 10 working days following the day of failure, then only a partial retest is needed for which no fee is charged.
If the vehicle is removed from the testing station for repair and returned for retest within 10 working days following the day of failure, then only a partial retest is needed and a partial retest fee is charged. In any other case a full retest is required and the full MOT test fee will be charged. Only one free partial retest is permissable per full examination.
Contacted VOSA but all they'll do is perform another MOT and determine whether car, as presented to them, should pass/ fail. They cannot determine where, when or who cause hole. They do give guidance on whether correct procedure was use. According to The Testers Manual, first comes visual, then finger/ thumb pressure, only light scraping with alloy end and light tapping with plastic/ rubber hammer. Definitely no poking or heavy scraping of affected area. When you think about it, 'enthusiastic' use of assessment tool will destroy evidence of corrosion.
If they found another hole near the repaired holes I think yes they were stupid not to find it in the first place, but everyone makes mistakes and the fact is the car is still not roadworthy. I would take the hit and go elsewhere next time (which will be this time as you have had your free partial re-test already).
Sucks ay!
You may think I'm nuts but I hate it when someone take advantage of their position - in this case being an MOT station - to get work through devious means. I will push the issue as far as necessary. I've sent them a registered letter and quoted terms of Supply of Goods and Services Act 1982 which outlines their responsibilities.
This may appear over the top as I plan on selling car once welding has been done and it's MOT'd.
If you need a good welder, I can thoroughly recommend Des Coles in Bristol. He's been welding for 40 years and clubs and even car dealers take cars to him. He's not into tack welding. All his welding is seam and his charges are reasonable.