He said that motorists had been attracted to forecourts by "new models and the latest technologies".
The 2, 000 drivers being balloted account for 90% of those supplying petrol to UK forecourts.
The 550ml desserts, made by Nestle in Germany, were sold in small shops, garage forecourts, newsagents and not large supermarkets.
It has already increased production and after years of bare forecourts, the yards are filling up with materials for sale.
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The result is that the forecourts are filling up with unsold vehicles.
We are providing the most efficient and technologically advanced fuels, including some biofuel blends which are not currently available on our forecourts.
Brian Madderson from the Petrol Retailers' Association, which represents independent forecourts and made the original complaint to the OFT, said the findings were "a grave disappointment".
The watchdog has launched an investigation into domestic oil and gas prices but this will not cover the cost of petrol on station forecourts.
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Police and retailers have told the BBC they are seeing an increase in thefts of fuel from forecourts as petrol prices hit record levels.
It has agreed to get limited supplies delivered directly to forecourts.
The Petrol Retailers' Association represents around 5, 500 forecourts and its chairman, Brian Madderson, said he did not think the government was prepared for a strike.
Some 90% of UK forecourts are supplied by the Unite union's 2, 000 or so members, who are calling for minimum standards of working conditions and pay.
According to the website PetrolPrices.com, the lowest costs for fuel at forecourts in or close to Stornoway is 138.9p for unleaded petrol and 147.9p for diesel.
Supermarkets now own 15% of all forecourts but account for 39% of total fuel volumes, the report said, leading to the demise of many independent petrol retailers.
However, prices at forecourts in the Western Isles remain high.
From 2002 the company began the laborious task of trying to cut capacity rather than continue to slog it out on the dealer forecourts with ever bigger discounts to lure buyers.
This system also means that, in theory at least, Betim is only producing Palios that customers have already ordered, rather than pumping out cars that will sit on dealers' forecourts awaiting a buyer.
In the Small Heath district of Birmingham, Pc Lee Woolman says that each week he has to recover CCTV images of fuel thefts from at least one of the three forecourts in his patch.
The number of petrol forecourts has fallen from 37, 500 in 1970 to 9, 000 in 2011, while the UK's diesel and petrol reserves have dropped to six-to-eight days, down by two days compared with 10 years ago.
This is a bad analogy because competitive markets require that there be winners and losers and, in this example, it is a good outcome for an inferior car manufacturer's goods to remain on the forecourts, unsold and unwanted.
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