McLaren have aimed another swipe at their beleaguered engine supplier Honda by declaring they would be winning in Formula One if they were powered by Mercedes.
The British team's relationship with Honda is in crisis ahead of the new campaign after a dour eight days of pre-season testing in which they were struck down by a number of reliability issues.
McLaren completed the least mileage of all F1's 10 teams in Barcelona, while the Honda engine is also down on speed.
Double world champion Fernando Alonso was heavily critical of Honda at last week's final test, and racing director Eric Boullier has added fuel to the fire with his comments that McLaren would be fighting at the sharp end of the grid if Mercedes supplied their engines.
McLaren were powered by Mercedes for nearly two decades but ended their relationship in 2015 to team up with Honda - the Japanese car manufacturer with whom they enjoyed great success in the late 1980s.
"I think we would be winning again," said Boullier when asked how McLaren may fare with a Mercedes engine.
"The truth is we're having more problems than we expected. We knew we'd encounter some things, but truly not as many as we're seeing.