Lewis Hamilton feels Mercedes' change of Formula 1 development direction before the Singapore Grand Prix has hurt him, but the three-time world champion cannot revert to... read more »

Daniel Ricciardo has opted to revert to the older spec Renault engine for this weekend's season finale. read more »

Daniel Ricciardo will reportedly be using the old-spec Renault engine in Abu Dhabi after the upgrade failed to deliver an improved performance in Brazil... read more »

Red Bull will revert to an old specification Renault Formula 1 engine for this weekend's Abu Dhabi Grand Prix, Autosport has learned read more »

Red Bull's Daniel Ricciardo says Renault's upgraded Formula 1 engine is not any better than the old spec, adding the French manufacturer needs to "go back to the... read more »

You d want Monza-spec for the start and end of the lap and Hungaroring-spec for the rest. Different drivers and teams will make different compromises," - Pastor Maldonado read more »

Sergio Perez looks to maintain his good run of results in Brazil to complete an impressive second half of the season with the B-spec Force India read more »

Kimi Raikkonen was forced to switch to a previous specification engine for Mexican Grand Prix qualifying after his car caught fire in final practice read more »

Jenson Button may have to wait for Honda's upgraded engine for at least another race as the manufacturer investigates Fernando Alonso's engine problems from Austin.... read more »

Fernando Alonso knows what he is looking for from the 2016-spec Honda F1 engine, but will get his hands on the latest developments at this weekend's United States Grand... read more »

Daniel Ricciardo says Red Bull is unlikely to use Renault's new-spec Formula 1 engine for this weekend's United States Grand Prix as it is "probably not worth... read more »

Sauber driver Felipe Nasr has called on Formula 1 tyre supplier Pirelli to ensure its 2017-spec tyres allow a driver to push more during a grand prix read more »

Renault has set their sights on a "clean weekend" in Austin, saying they have no concerns over the reliability of their new spec engine... read more »

Mercedes says its decision not to supply its customers with its latest spec of Formula 1 engine for the remainder of the season is out of concern for compromising their performance read more »

Force India team boss Vijay Mallya is pleased that the outfit has been able to deliver on its pre-season target of claiming a podium in 2015, following Sergio Perez's... read more »

The FIA has released new regulations that stipulate manufacturers cannot offer old-spec engines to customers, but Autosport understands this stance is likely to change read more »

Formula 1's governing body, the FIA, has clarified that customer power units used during the 2016-2020 seasons must be the same specification as that of the… read more »

Carlos Sainz Jr expects to be racing for Scuderia Toro Rosso in 2016, and believes the team are close to agreeing a deal to run 2015-spec Ferrari engines. View the original... read more »

Toro Rosso is closing on a deal with Ferrari to use 2015-spec Formula 1 engines next season, Autosport understands read more »

Mercedes boss Toto Wolff defends decision to keep latest-spec engine for works team. read more »

Sauber will not receive the latest specification of Ferrari engines when its drivers take new power units this weekend. Both Marcus Ericsson and Felipe Nasr are due to have... read more »

Honda will introduce a new specification of engine on Fernando Alonso's Formula 1 car for the Russian Grand Prix, meaning the Spaniard will have to take a grid penalty read more »

Bob Fernley says the fact his Force India Formula 1 team was among the quickest in the Japanese Grand Prix's final stages proves its B-spec car is a step forward read more »

Gene Haas has explained that his eponymous team's maiden Formula 1 design is already "fully developed", with work on its 2017-spec contender set to begin before… read more »

Manor will get use of the latest specification Mercedes power units as part of its new deal with the German manufacturer. read more »