Marussia’s difficult weekend in Hungary ended with both drivers some way off nearest rivals Caterham
Both Jules Bianchi and Max Chilton took the chequered flag three laps down on race winner Lewis Hamilton after struggling with the balance the entire race.
Having started from the back of the grid, the team initially adopted a two-stop strategy but had to move to three stops as tyre wear was worse than expected.
"It was a very tough race today and we were struggling with the balance the whole time and having to work so hard to preserve the rear tyres," said Bianchi.
"All 70 laps were a bit of a battle to be honest. On the positive side we remained reliable in a race which is very demanding for the cars, bringing two cars home once again."
Chilton described the race as 'easily the hardest of my career' after finishing in seventeenth place.
"The track is challenging enough at the best of times, with little or no respite the whole lap - and there are 70 of them," he said
"Compounding things further for us was a real balance shift on the Medium tyres, which we started the race on, and this eased only for a short while when we ran on the Soft tyre for the second stint. This made it really difficult to drive the car for most of the race and at the same time try to manage the tyre degradation, so it really took every ounce of concentration and energy," he explained.
"These problems lost us a lot of time and this put us into blue flags much sooner and for a much longer period of time, which then causes you to lose even more time and have to fight to make up what we could when we were in free air. With that in mind, I am pleased with my relative race pace under the circumstances," he added.