Set off down the A5 today (Ariel Atom Track day) not got 3 miles all of a sudden when I took my foot of the Accelerator the car juddered or like it was missing,I put my foot on the gas no problems this went on for about another 4 miles then the car just went normal. From that point I did about 30 miles to my destination then 40 miles back home not one missed beat. As anybody Else at this TDI owners or could it be some dodgy derv. By the way the Atom goes like stink and I want one