Fontana joined the Sauber test team in 1995 when
Peter Sauber approached him for a test session that took place at Barcelona in late 1994. He retained this role throughout 1995 and 1996. At the
1997 European Grand Prix in Jerez, Fontana received a $5,000 fine for speeding in the pit lane and eventually qualified 18th. During the race, Fontana appeared to block
Jacques Villeneuve, who was the direct rival of
Ferrari driver
Michael Schumacher at the time. ITV commentator
Martin Brundle pointed out that the Sauber team used
Ferrari engines at the time. Fontana eventually finished 14th with his highlight being overtaking
Jos Verstappen with two wheels on the grass.
Attempted comebacks Fontana was considered as a driver for the dying
Tyrrell team for 1998, with team principal
Ken Tyrrell negotiating with the Argentine. Fontana signed a draft contract, but did not sign the final contract as the owners, British American Tobacco, had vetoed the suggestion, and Tyrrell was forced to sign Brazilian
Ricardo Rosset, who had more sponsorship brought to the team. In 1999, Fontana tested with
Minardi for a seat that would partner
Marc Gené. However, sponsorship once again caused the Argentine to lose the seat for a possible comeback. ==Post-Formula One==