For all the Honda fans I suggest
you read this, instead of basing your comments on thin air and McLaren hate.
But pre-season testing revealed serious shortcomings. The Honda engine was leaky, unreliable, and less powerful than the old design. It also shook uncontrollably, as the transmission produced terrible vibrations that weren't predicted during winter testing on Honda's Sakura dyno.
They drew up a three-stage development plan to achieve this by an agreed deadline. The first step was scheduled for May's Spanish Grand Prix, the second for the Canadian GP in June, the third and final step - to match the estimated Mercedes customer engine output - was meant to arrive in time for August's Belgian Grand Prix.
Honda brought updates to each of these races, but they were not sufficient. As its F1 project leader Yusuke Hasegawa admitted in the FIA press conference at Spa, Honda "failed" in its task, and was now in breach of the development plan agreed with McLaren, opening the door for separation and severance.
Renault said it was open to a partnership with McLaren on the same terms as Red Bull, and McLaren can count on the bonus of already dealing with Renault's fuel and lubricants supplier BP. McLaren also believes it can help Renault technically, having assisted development of certain elements of Honda's energy recovery systems.
Anticipating that Honda-Ilmor wouldn't succeed in its task, McLaren continued efforts to secure a supply of customer engines from Mercedes. The F1 team was supposedly reticent to agree to this, fearing an Alonso-driven McLaren would be a threat to its own prospects at certain tracks. Nevertheless, feeling it had the support of the Mercedes board, McLaren was confident.
McLaren estimates that a fully operational Renault engine, with BP fuel and works mapping, would produce 5bhp more than a current customer Mercedes engine, which it reckons is 15kw (20bhp) down on the works engines owing to software mapping it believes Mercedes only makes available for Hamilton and team-mate Valtteri Bottas in qualifying.
McLaren only wanted results, and wanted them yesterday, which added pressure on Honda and increased the likelihood of mistakes. Honda wanted to be better, but could never progress quickly or competently enough to satisfy McLaren's demands.
Once trust was lost, there was no real hope of reconciliation. So now, finally, after nearly three seasons of abject disappointment and underachievement, McLaren-Honda's second marriage is over.
A match made in heaven it ultimately was not. Rather a tale of great expectations that never came close to being fulfilled.
Doesn't sound that bad, does it. Everyone wins.
McLaren gets a works engine (not deal)
McLaren keeps Alonso
BP can develop fuel for two teams
Toro Rosso gets funding and free engines
Honda can develop without pressure
Honda can move over to Red Bull if they get their act together