MP4-29H/1X1


McLaren have run new partner Honda's turbo hybrid engine for the first time at Silverstone.
The team, who are starting a 10-year works partnership with the Japanese manufacturer in 2015, have built an interim car to test the engine.
The car had a "shakedown" test run on a "filming day", which allows 60 miles of running within the rules restricting testing.
McLaren test driver Oliver Turvey was at the wheel on Friday.
The MP4-29H/1X1 car stopped on track once, but the team managed to get it going again immediately.
McLaren said the car was not run at racing speed, so they were unable to glean accurate first impressions of the engine, but said there was "a lot of positivity".
The team plan to ship the car to Abu Dhabi so it can take part in the two-day test immediately after the season-closing race next weekend.