I would have thought that a few customers with proofs of purchase could have raised small claims actions and taken ASDA to court , citing each others claims and press coverage as corroboration - as a civil action I'm sure the judge would have agreed the balance of probability was that the fuel was at fault and ordered them to pay up .
One instance proves nothing ( unless an engineer's report confirms it , along with a fuel sample analysis ) , two instances are a big coincidence , and three or more would be damning .
Derek
In this instance I did have a sample analysed (£25). That showed a mixture of Diesel, Water & Petrol along with some unknown "detergent" . The thinking being that the Petrol Station Tank may have been flushed at some point immediately before my wife filled up.
The pump in the car was actually siezed and the filter was 100% blocked , leading to fuel starvation. What came out looked like tar with mayo blobs in it. There was no trace upstream from the filter. We were lucky as it appears that the filter did its job. We did have to have the tank flushed and new pump and filter (circa £700)
I did speak to my solicitor friend who advised that ASDA would claim (as they had) miss-fueling. We had a receipt that showed petrol only. But that is not on it's own considered proof as the miss-fuel could have occurred either before or after the fill up in ASDA.
There have been many high profile cases almost identical where motorists have lost in court and many where they have won. It does seem that the weight of evidence falls on you to provide. This we found when we contacted (via the newspaper) some of the other drivers affected, who were not wiling to go to court.
I do not think that there is anything inherently wrong with Supermarket Fuel. I think that statistically it is more likely to appear so due to the Supermarkets selling more fuel than any other individual outlet. I have read of Shell Stations having issues like this.
I would have hoped that ASDA would have looked at our case sympathetically as (a) we were up until that day "good customers" of their store and petrol station (b) the facts all pointed at this being their mistake.
The issue is that ASDA is not a person it is a huge corporate that probaly only views £ revenue and not Mr & Mrs average.