 Initially, Ayrton Senna was impressed by the car's handling and nimbleness, but he knew the customer Ford-Cosworth V8 to be underpowered compared to the Renault V10-powered Williams and he demanded a race-by-race contract at $1 million per Grand Prix, though others suggested that this was a marketing ploy between Senna and Ron Dennis to keep sponsors on edge and interested.Although the Ford-Cosworth V8 was lighter than the Renault V10, the power-to weight ratio of the Renault was greater than the Ford.However, the MP4/8 was competitive enough to achieve some remarkable successes.