"Now the engine works well," Tarquini told AUTOSPORT. "At Vallelunga there were some small problems with oil and water circulation, but in a really short time Honda have solved all of the problems. The car is also very sensitive to modifications.
"Everybody was happy with the performance of the car, but we are only in the beginning of the [test programme]. I think we have only discovered 25 per cent of the potential of the chassis."
Volvo gave the World Touring Car Championship a major boost when it announced it would enter the series, but its ambitions don't stop there. JACK COZENS examines its programme, the S60 and what its arrival means for the WTCC
The 2012 World Touring Car champion says he never had the money to race cars. Yet 2015 is his 11th season in the WTCC. He talks STUART CODLING through his journey from motorsport fan to paid professional - for little more than £100,000