(Prague, January 13, 2012) Evaluation of results of fuel controls carried out by the Czech Trade Inspection Authority in the last month of 2011 showed that inspectors found the highest number of noncomplying motor oil samples when compared to the rest of the year. 9 of 76 taken samples failed appropriate standards’ requirements in one or two criteria; in 4 cases, the breaches were very serious, thus there was a suspicion of illegal manipulation with fuel. The number of noncomplying motor oil samples caused increase of the total average of poor quality fuel in December – it increased up to 7.4% in comparison with November (the increase was more than 3%). In motor petrol, only one of 70 taken samples failed.