The 22 drivers have their say on Saturday's action at the Circuit of The Americas in Austin, Texas.
McLaren
Sergio Perez: "Obviously, I'm very pleased, but, when you're so close to the cars in front, you still want to improve. In that respect, I'm slightly disappointed - but if you'd told me I'd be seventh before the start of qualifying, I'd have taken it.
"For quali, I was just able to relax and focus. At the end of the day, I'm a racing driver - I've been doing this my whole life. When I get in the car, I just forget about everything else and concentrate on my own performance.
"Tomorrow, I'll be racing in front of my own people - that makes me feel hugely proud. I'll be starting from the clean side of the grid, I'll be hoping for a good start, and I'll be really hoping to put on a great show for all my Mexican fans."
Jenson Button: "I don't know what happened. I couldn't find the balance or the grip. The pace just wasn't there.
"That's tough, especially when we've looked pretty quick for most of the weekend. But I don't know where our pace has gone in qualifying - it's not the first time it's happened.
"It wasn't necessarily the weather conditions - other drivers seemed to cope - although I guess it may have contributed. We'll investigate. It was weird though - especially when you saw that Valtteri [Bottas] could go quickest in Q1 but his team-mate couldn't even get through to Q2.
"My three-place grid penalty means I'll be starting 16th - that won't be ideal, as it means I'll be starting not only from a long way back but also from the dirty side of the grid."
Lotus
Heikki Kovalainen: "I knew yesterday that we had a good car, but I didn't really set myself a target for qualifying. I felt that I got pretty much everything I could from it today, as I struggled a bit compared to yesterday with the cooler temperatures this afternoon. Overall, everything's been positive so far and we got into the top ten. I'm not making any predictions, but we've seen that Kimi could do pretty well working forwards from similar grid positions so hopefully tomorrow we can have another good day."
Romain Grosjean: "It's not been the easiest weekend in terms of finding the right balance with the car, so to be third on the grid is a good result. We managed to go through Q1 on the hard tyre which was not the plan initially, but it was a nice surprise and gave us options for the two following sessions.
"It's great for the team to have Heikki [Kovalainen] in the top ten too - especially with Mercedes and Ferrari struggling a little bit - as we're still fighting them hard in the Constructors' Championship, so hopefully we can score good points with both cars tomorrow. Sebastian [Vettel] and Mark [Webber] were very quick today, but of course we'll do our best to round up the bulls in the race; we are in Texas after all!"
Mercedes
Lewis Hamilton: "That was a really tricky session this afternoon so I have to be pleased with fifth place although, of course, I'd rather have been fighting for a position on the first two rows. The car was quick out there and I had a good balance but we just couldn't get the tyres to work.
"The track was completely different from the final practice session this morning and it was really gusty round the back which affected our car quite a lot. In practice, the car has felt really strong this weekend so I hope we have a good set-up for tomorrow. I need to have a good start in the race and, if we can achieve that, then there is still a lot to play for."
Nico Rosberg: "I had real problems getting my tyres into the right working window today and it's so disappointing to have not gone through to Q3. It was all about finding the right compromise in the conditions which saw very hard tyres on a very soft track surface, and we saw a lot of surprises today as a result.
"Tomorrow should be warmer which will improve the situation for us but starting so far back is not ideal. We've worked a lot on our race pace so the car should be strong tomorrow and I'll be pushing really hard to move forward, overtake some guys and score good points."
Sauber
Nico Hulkenberg: "I have felt comfortable with the car over the whole weekend, but it was a different story in Q1 and Q2, as the wind picked up compared to FP3 this morning. It was a tail wind out of turn one and, therefore, also sector one and a bit in sector two. It was tricky, because our car is pretty sensitive to wind. But we made a few changes to it and put it all together in Q3. I think this was the maximum today for us and I am happy with my lap. P4 is a good position to start the race from tomorrow."
Esteban Gutierrez: "Overall it was a good qualifying. With the change of wind it was tricky to decide on how to warm up the tyres in order to get the most out of them. We discussed several strategies, but at the end we decided to do one out lap and then push. It was pretty challenging and it was not an optimal lap, but getting into Q3 is a good thing, especially here in Austin. With all the support we have here from the fans it's great to have two Mexicans qualifying in the top ten."
Force India
Paul Di Resta: "I'm reasonably happy with today's result because this is a track that does not particularly suit my driving style. The wind picked up quite a bit before qualifying, which made the conditions tricky and I think we made the most of that. We out-qualified some quick cars today and in the end I was just a tenth away from making Q3.
"I was planning to go for a final quick lap in Q2, but I came across Lewis [Hamilton] on my out lap, who was cooling his tyres. It meant my out lap was compromised so we aborted the run. We can make a free choice on tyres tomorrow and we've shown recently that our performance on race day has been our strength. If we can make a good start and optimise the strategy, then points will be within reach."
Adrian Sutil: "It's a disappointing result today. The car has been quick through all the sessions, but things didn't go to plan today. I had to overtake a lot of traffic on my quick lap in Q1, including a Marussia going into the final corner, and that cost me the chance of making Q2. I then started another lap and suffered a brake disc failure on the front right, which ended the session for me. So I'm starting in P17 and I just hope we can do something with the strategy to try and get up into the points tomorrow."
Toro Rosso
Daniel Ricciardo: "Overall, I am pretty happy with eleventh, which is clearly very close to making the cut to Q3. However in Q1 I was frustrated with the balance of the car and I felt I was quite lucky to get into Q2. I believe the wind conditions were making life tricky for everyone and I don't think I was the only one struggling. I was pretty happy with my Q2 lap even though the car was moving around a lot. Now I'm looking forward to the race: I'm just outside the top ten, I'm on the clean side of the track and I get a free tyre choice."
Jean-Eric Vergne: "I can't explain my performance or lack of it this afternoon. We struggled with the car right from the start of the weekend, but we had made progress overnight and improved it in FP3. Then, this afternoon, on my first run in Q1 I was struggling on my first run on the Hard tyre, but as soon as I fitted the Medium, I gained two seconds and all of sudden, I had a driveable car and set a good time and was much happier.
"But in Q2, when I had opted to go for just a single timed lap on the new Option, I again found the car very difficult to drive. Maybe it is linked to the warm-up of the tyres, as it is very difficult to get them up to temperature, so we will have to look at that, but generally, I just didn't feel comfortable driving the car. Tomorrow we will see what happens, when hopefully the improvement we made overnight will pay off over the long runs."
Williams
Valtteri Bottas: "I really enjoyed today and I am happy with that performance. To be honest I expected a bit more in Q3 because we were competitive in Q1 and Q2. I'm very happy for the team; they've all done a great job and improved the car a lot from practice to qualifying. We are in a good position for tomorrow and we need to try and gain from this and score some points in the race."
Pastor Maldonado: "We have struggled this weekend and today showed that; the car doesn't feel right in terms of the tyres pressures or temperatures so we need to take a closer look at that. We got held up by a bit of traffic, which meant that we weren't able to get into Q2. We will try to do our best in the race tomorrow from the position we're in."
Caterham
Charles Pic: "We had a small mechanical issue at the start of FP3 which meant I had to come in earlier than we'd planned on run one. It was fixed quickly and I was back out on the primes for the first full run and, compared to Friday, the car was definitely better. It was a little on the oversteer side, especially in the medium to high speed turns, but it was good in the lowspeed sections.
"In qualifying the car balance felt very different form FP3. Maybe the change inwind direction affected it a bit but it was understeering through turns four to nine and in 11, and then oversteer came in on the exit of turns 13 and 19 so I couldn't really attack as I had in FP3. We have a penalty anyway because of the gearbox change we had to make this morning so I was always going back a couple of places, but even with that it would have been good to carry through the pace from the morning session to qualifying."
Giedo van der Garde: "Right from the start of FP3 it was clear the changes we'd made overnight had worked well. The track conditions were a bit better but the car was back to how it had been in the last few races, much more balanced which meant I could push round the whole lap. We still had a bit of front locking to deal with and I was struggling a bit with traction, but overall it was a good start to the session.
"We tried a camber change for run two but it didn't improve anything so we stuck to what was working and the rest of the session was ok. On the performance run I didn't have a clean lap so my final time was definitely away from what it could have been, but overall I was reasonably happy going into quali.
"We went for two three lap runs in quali and I have to say I'm very pleased with where I finished. Considering the fact this is a new track for me, and I missed FP1, to finish ahead of the other guys we're fighting with is, I think, good work. The car felt really good in Q1, I'm not sure there was a lot more in it but still, we start tomorrow in 19th and I think it'll be an exciting race."
Marussia
Jules Bianchi: "After the problems we have experienced so far this weekend, we absolutely needed to find the right solution in time for qualifying. I'm very happy that we did this and although we haven't been able to spend the time to tune the car, we made enough progress to split the Caterhams, which is a good result from where we were.
"Had we been fully there with the balance, who knows, it may have been possible to get ahead of Van Der Garde as we were just a few hundredths away. It was pretty windy in Sector 1 also, so if we look at the overall picture we have to be pretty pleased with the result. My thanks to the Team for all the hard work in resolving our problems and now we can look forward to the race with a little more confidence."
Max Chilton: "I'm a little disappointed with my qualifying result. We've struggled with the car balance all weekend. We went back to where we started with the set-up to try to reduce the instability, but this made it worse and we've had to try quite a few things to improve. I was actually quite happy with the lap I did this afternoon, but the time just wasn't there, which is frustrating. Our car is always better in the race and that's what we've been focusing on, so we hope for better things tomorrow."
