My car passed its MOT today with no problems at all, which is very interesting as I've been using Tesco 99 fuel for a while now and it passed the emissions test. Last year on Shell V-Power it failed and in the end only just scraped by after VW put some kind of additive in the fuel tank to get it to pass. Tesco 99 contains 5% bioethanol which reduce the emissions, it certainly must work because this year it sailed through the emissions test with a 100-cell CAT, whereas last year it struggled to pass with the same hardware and Shell V-Power "We also typically include 5% bioethanol – a clean and pure ultra high-octane component which is also renewable to help cut greenhouse gas emissions." http://www.greenergy.com/tesco_99_octane/index.html Well done Tesco ... great fuel!!! PS. The smoked dark rear taillights from Germany passed no problem too, so they are MOT legal!