Increased performance gap between hard and medium, and medium and soft compounds.
Sebastian Vettel: "I'm happy today, we did a lot of laps, we learned a lot and it was a positive end to a tough week here."
After 12 days of testing, Mercedes AMG Petronas completed the highest mileage of any constructor with 4,973 km.
Jean-Eric Vergne: "I would describe today as positive and we did some good work..."
The 2014 FIA Formula One World Championship will commence with the Australian Grand Prix on March 14-16.
Valtteri Bottas: "I think our final day of testing was very good, right up to a very unlucky failure just one run before the end."
After lunch, Jenson only managed a few laps before suffering a high-mileage internal combustion engine failure.
In two weeks the 2014 FIA Formula One World Championship kicks off at Melbourne’s Albert Park, Australia ringing in the new V6 turbo era.
Nico Hulkenberg clocked up 74 laps in the VJM07.
On Sunday Max Chilton will return to the cockpit of the MR03 for the fourth and final day of running.
Testing continues at this circuit tomorrow, when Fernando Alonso will be on track for the final day of the test.
Nico Hulkenberg: "Lots of laps today, which is good, and it’s the third day in a row that the team has done more than 100 laps."
Romain Grosjean will drive for the final day of testing at Bahrain International Circuit tomorrow.
Lewis Hamilton will bring the pre-season programme to a close as he takes the wheel of the F1 W05 for the fourth and final day of the test tomorrow.
Kevin Magnussen: "Today’s laptimes from both Williams and Mercedes look very quick, but I don’t think any of the teams have been running to identical programme..."
Sebastian Vettel: “It’s not the best situation to be in but we can’t change it.
Felipe Massa: "We did a lot more performance work in the car which is something that we haven't done so much of so far."
Daniil Kvyat: “A very positive day because we managed to complete a good amount of laps."
For the final day of testing tomorrow Adrian Sutil will be driving the Sauber C33-Ferrari in the morning, with Gutiérrez taking over in the afternoon.
Williams will be back on track tomorrow, with Felipe Massa in the FW36 for the third day of the test.
Esteban Gutiérrez: “The mileage we covered today was great, and these were the most laps in one day for the team so far."
Nico Hulkenberg will drive on Saturday and Sunday.
Kevin Magnussen returns to the cockpit for his final day in the car before Melbourne.
“It went a lot better today,” said Daniel.