Since purchasing my Hyundai i30 I have kept its full service history. The car was serviced in October 2013. The car showed no issues - although a fuel filter wasn't changed during this time.

Further to this the car was MOT in January 2014. It was noted there was a slight delay in power uptake when accelerating up gears, by my local mechanic. I booked the car in thinking it was a spark plug etc. The local mechanic found nothing wrong.

A week later I was accelerating past a car reaching 60mph where the car lost all power and ground to a halt. No engine lights appeared. The car restarted and after A LOT of reassurance (nearly swiped out by a lorry) from my father, I drove the car home on the dual carriageway at 40mph.

I immediately checked the car back into my local mechanic, who ran diagnostic checks and ran the vehicle out locally. No indication of engine failure AT ALL.

I drove it away and the engine failed 5 times on the way home. Each time restarting no problem. The vehicle showed the manufactures lights permanently. I then rang a Hyundai garage.

They booked the vehicle in two weeks after I phoned. Refusing to collect the motor or provide a courtesy car.
The fault: THE CAR WAS INCOMPATIBLE WITH THE NEW CHANGES IN BIO- DIESEL. (Which occurred in November). 2 options:
1. A new filter would need to be fitted costing £118
2. Entire engine clear out for £350- Hyundai would subsidize £70 = £280

Both with no guarantee it would solve the problem.

I assured the problem was happening nationwide and was extremely common. The warranty would not cover the cost of the fuel, and that it was a result of new bio changes in Diesel.

I have only ever used Shell since I have bought the car (as claim VAT on shell only fuel). I wrote to Shell who advised me that Hyundai Manufactures were responsible for car compatibility and that there fuel was in line with EU guidelines.