Ricciardo started from 19th on the grid at Silverstone because of a five-place penalty for a gearbox change. Neither Red Bull gambled, opting for intermediate tyres and it initially paid off, with Ricciardo leading Verstappen in the time sheets.
"I lost a bit of power down the straight and heard some weird turbo noises, I thought I could nurse it back to the pits but then it all switched off and we couldn't save it for the session". My tush got a little bit dirty, or bruised, but I think in the end fifth was the maximum (I could finish). It was a bit bumpy. "I just felt like the whole race I was overtaking cars and I hope the fans enjoyed it".
A Formula One race in London could have moved a step closer after a new organisation revealed it is in talks to host the British Grand Prix around the Olympic Park.
It is the second such penalty to be triggered this weekend - and the third in a week - after Mercedes confirmed Valtteri Bottas would be sent back five places for another unscheduled gearbox change.
"I've been really happy with how I've been putting my Sundays together for the last handful of races, it's been strong and to get fifth from the back today I really couldn't ask for more", said Ricciardo.
"I'm not 100 percent sure what happened yet but it is a suspected turbo failure", Ricciardo said.
The 28-year-old started to drift off again before Pinkham let him go, joking she had no other option because his rambling gave the impression he was "about to pass out".
"Very excited, could cut glass at the moment with these things".