Nico Hulkenberg has called his fourth-placed finish at the Korean Grand Prix 'one of the best' drives of his career.
The Sauber driver moved up to 11th in the drivers championship after holding off the challenge of Britain's Lewis Hamilton, who finished fifth.
"I drove one of the best races in my career so far," said Hulkenberg, whose equalled his best ever finish.
"A big thank you to the entire team for providing such an excellent car. Lewis really put the pressure on at the end."
He added: "I have had cars in the mirrors before, but today there were a lot and it was a bit annoying.
"The car's traction was good, so that kept me alive against Fernando and then Lewis later on and we were also fast on the straight."
Romain Grosjean, who finished third in Korea, was "begging" to be allowed back past team-mate Kimi Raikkonen so he could take second place but was told to race for his place.
"Romain got frustrated because he did a small mistake after the restart with the safety car and Kimi just passed him," said Lotus team principle Eric Boullier.
"I think he was begging for some team orders to let him past, but he made a mistake and it was normal racing. I think he could have been quicker, but with a bit of pressure he lost concentration so it's just part of the learning curve."
He added: "We know he was upset. Romain was clearly pushing on the radio to get some help to get this position back but we said no team orders and keep racing. Yes, he was the quickest [Lotus], but sometimes it's not enough to gain position."
Mercedes' Nico Rosberg had to settle for seventh place after he needed a new wing, when sparks started flying from his damaged car.
"I was on course for a podium finish after overtaking Lewis and two seconds later, the front wing just broke," he said after picking up six points.
"It was pretty scary because that could have been a dangerous situation but the engineers told me over the radio that it was under control and I could carry some speed back to the pits.
"It's a shame because the car felt great and I found a good balance and how to get the most out of the car, which I hadn't managed until this point of the weekend.
Paul Di Resta failed to finish for the fifth successive race after crashing his Force India car on lap 24.
"I have to hold my hands up and apologise to the team," said the Scot.
"Maybe I took a little bit too much kerb and that's sent me off the track. The way we've set the car up means it has been quite edgy and difficult to drive, and that's what has caught me out, although whether it has cost us points is hard to say.
"The performance in the race was not where we wanted it to be and the front tyres were wearing out too quickly. So we need to have a rethink ahead of Suzuka and go there determined to have a clean race."