2016 European Grand Prix

Azerbaijan  2016 European Grand Prix
Race details
Race 8 of 21 in the 2016 Formula One season

Layout of the Baku City Circuit
Date 19 June 2016
Official name 2016 Formula 1 Grand Prix of Europe[1]
Location Baku City Circuit
Baku, Azerbaijan
Course Temporary street circuit
Course length 6.003 km (3.73 mi)
Distance 51 laps, 306.049 km (190.170 mi)
Weather Partly cloudy
30–33 °C (86–91 °F) air temperature
39–45 °C (102–113 °F) track temperature
2.5 m/s (8.2 ft/s) wind from the southeast[2]
Pole position
Driver Mercedes
Time 1:42.758
Fastest lap
Driver Germany Nico Rosberg Mercedes
Time 1:46.485 on lap 48 (lap record)
Podium
First Mercedes
Second Ferrari
Third Force India-Mercedes

The 2016 European Grand Prix (formally known as the 2016 Formula 1 Grand Prix of Europe) was a Formula One motor race that was held on 19 June 2016 at the Baku City Circuit in Baku, Azerbaijan.[3] The race was the eighth round of the 2016 season, and marked the twenty-third running of the European Grand Prix as a round of the Formula One World Championship. It was the first time that the race has been held at the circuit and the first time that a Grand Prix has been held in Azerbaijan.

Nico Rosberg entered the round holding a nine-point lead in the World Drivers' Championship ahead of team-mate Lewis Hamilton. Their team, Mercedes, came in leading Ferrari by seventy-six points in the World Constructors' Championship. Rosberg went on to win the racehis first race win since the Russian Grand Prixand extended his championship lead to twenty-four points. The result also marked Rosberg's second career Grand Slam. Sebastian Vettel finished second, with Force India driver Sergio Pérez completing the podium. In the Constructors' Championship, Mercedes extended their lead over Ferrari to eighty-one points.

Report

A series of postage stamps commissioned by Azermarka to celebrate the race.

Background

Going into the weekend, Nico Rosberg led the Drivers' Championship with 116 points, nine ahead of teammate Lewis Hamilton. Sebastian Vettel followed in third with 78 points, six clear of Daniel Ricciardo, followed by Kimi Räikkönen with 69.[4] In the Constructors' standings, Mercedes led the field with 223 points, ahead of Ferrari with 147. Third was Red Bull Racing with 130 points, with Williams a further 49 points behind.[5]

Preparations

Following the 2012 event in Valencia, the European Grand Prix was discontinued. With the Korean Grand Prix being held in breach of contract, Bernie Ecclestone – the sport's commercial rights holder – sought a replacement event.[6][7] After exploring the possibility of reviving the European Grand Prix in 2015, the race was included on the 2016 calendar.[3]

The circuit passed its final inspection in May 2016 with FIA Race Director Charlie Whiting declaring his satisfaction that the circuit would be ready in time for the race.[8] The circuit attracted some criticism from drivers who highlighted a lack of run-off in some corners and the tight pit entry positioned at one of the fastest points on the circuit.[9] Following problems with loose kerbs in free practice, changes were made in turns 6 and 12, where the kerbs were replaced by painted markings on the track.[10][11] Further revisions were made to the pit entry ahead of qualifying, extending the white line denoting the entry lane to allow drivers more time to react to cars entering the pit.

Tyres

After providing teams with the ultrasoft compound for the Monaco and Canadian Grands Prix,[12] tyre supplier Pirelli made the supersoft, soft and medium compounds available for the race despite the ultrasoft compound being specifically designed for street circuits.[13] Pirelli explained the decision not to provide the ultrasoft tyres as being a result of a lack of available performance data on the circuit,[14] while most teams opted for a full complement of soft and supersoft tyres and taking only the minimum number of medium compound tyres dictated by the rules.[15] In preparing for the race, Pirelli acknowledged concerns about the circuit's high speed straights and direction changes causing "standing waves" over longer runs, a phenomenon whereby the energy passing through the wheel is strong enough to shift the build of the tyre, compromising its rigidity and increasing the likelihood of tyre failures.[16] Further concerns were raised about the impact of the temporary surface used to protect the cobblestones through the Old City section on the tyres, amid fears that predicted high temperatures throughout the weekend would cause this surface to break up.[16] Following the first free practice session, it was found that the metal bolts used to anchor segments of kerbing to the roadway had started working loose and had been cutting into the rubber of the tyres, necessitating minor modifications to the circuit in order to correct the issue.[17]

Drag reduction system

The race saw the use of two drag reduction system (DRS) zones, with the first positioned along the main straight and the second located on the parallel back straight between turns 2 and 3.[18]

Support events

The circuit also hosted the third round of the 2016 GP2 Series championship as a supporting event.[19]

Controversy

Following the initial announcement of its revival, the race was subject to criticism in light of Azerbaijan's human rights record as the race was established with the financial support of the Azerbaijani government.[20] The criticisms were made in the build-up to the 2014 Russian Grand Prix – which was also established with government support – and accusations of Russian involvement in the shooting down of Malaysia Airlines Flight 17 over Ukraine.[21] In response, Red Bull Racing and Mercedes team principals Christian Horner and Toto Wolff sought to distance the sport from political issues.[22] On 7 June 2016, the organisation Sport for Rights called for Bernie Ecclestone to speak out about the human rights situation in the country, having written an open letter to him to which Ecclestone had not replied. Sport for Rights made it clear that they did not call for a cancellation of the race, but instead urged the sport to use the race to promote these issues in public.[23]

With the race scheduled for 19 June, the event conflicted with the conclusion of the 2016 24 Hours of Le Mans.[24] Force India driver Nico Hülkenberg, who won the 2015 race with Porsche would not be able to return and defend his title, leading to accusations that Formula One Management had deliberately scheduled the race to conflict with Le Mans and prevent Formula One drivers from participating.[25] In May 2016, the Azerbaijan government decided to abandon the use of daylight saving time, prompting event organisers to change the start time of the race. The revised start time negated the clash between the start of the Grand Prix and the race in Le Mans.[26]

Free practice

Per the regulations for the 2016 season, two 90-minute practice sessions were held on Friday and another 60-minute session was held before qualifying on Saturday.[27] In the first ever session on the new track on Friday morning, Lewis Hamilton set the fastest time at 1:46.435. He was followed by his Mercedes teammate Rosberg almost four-tenths of a second back, with Valtteri Bottas third for Williams, also within one second of Hamilton. Fernando Alonso was an encouraging fourth for McLaren. Both Bottas and Alonso set their fastest times on the soft rather than the supersoft tyre compound used by the Mercedes drivers. Several drivers got caught out on the new track, the first being Esteban Gutiérrez, who was forced into the run-off area at turn 15. Hamilton also had an incident, touching the barrier at turn 3 and flat-spotting his tyres later on the lap. The biggest incident occurred when Daniel Ricciardo crashed his Red Bull RB12 at the exit of turn 15, losing one of his rear wheels and causing an eleven-minute red flag period.[28]

Hamilton was again fastest in the second session on Saturday afternoon, edging out Rosberg by almost seven-tenths of a second. Rosberg's running was limited as he coasted to a halt on track with twenty minutes of the session left to go due to losing drive. Ferrari was not competitive in eighth and thirteenth place for Vettel and Räikkönen respectively, with both cars suffering from problems with their energy recovery unit. The top five cars were powered by Mercedes, as Sergio Pérez led the charge behind Mercedes in third, ahead of Bottas and Nico Hülkenberg. Fernando Alonso managed only eleventh place as he spent considerable time in the garage while his team worked on his car. Marcus Ericsson also had limited track time as a problem with his exhaust pipe forced him to miss the early part of the session. With loose kerbs detected during the GP2 qualifying session, drivers were instructed to stay clear of the kerbs at turn 6. Once more, many drivers had minor incidents on track, with some having to take to the run-off area at turn 3, while Gutiérrez touched the barrier at turn 8. Carlos Sainz, Jr. spun at the first corner, but nevertheless finished the session in sixth, the fastest runner without a Mercedes power unit.[29]

In the third session on Saturday morning, Hamilton topped the timesheets once again, setting a time of 1:44.352, a quarter of a second clear of teammate Rosberg. Hülkenberg was third for Force India ahead of Ricciardo and Vettel. The session saw several incidents: Bottas damaged the floor of his car when he ran over a drain cover on his installation lap and was forced to miss the rest of the session; Felipe Massa made contact with the wall, but was later able to rejoin practice; Räikkönen's track time was limited as well due to a loss of power; and a red flag period occurred right after the chequered flag fell as Pérez crashed at turn 15.[30]

Qualifying

The first period of qualifying ran for eighteen minutes and set positions seventeen to twenty-two on the grid.[27] With the circuit being six kilometers long, the narrow roads creating an increased risk of encountering slow traffic and the high probability of a yellow flag – owing to limited run-off and the difficulty drivers faced extracting themselves from escape roads – forcing those on the circuit to abort flying laps, drivers were under increased pressure to set a flying lap early in the session. Nico Rosberg was the fastest at the end of the session, which saw MRT drivers Rio Haryanto and Pascal Wehrlein eliminated in seventeenth and eighteenth place, their best qualifying performance of the season. Jenson Button qualified nineteenth, after running wide at turn 15 on his first flying lap and aborting his second after encountering traffic. Marcus Ericsson finished twentieth overall, ahead of the Renaults of Kevin Magnussen and Jolyon Palmer, who struggled with a lack of power on the circuit's long straights.

The second qualifying period was fifteen minutes in length, and was used to set positions eleven through to sixteen.[27] It was one again topped by Nico Rosberg, who was the first person to set a time under 1:43.000 all weekend, while Lewis Hamilton locked his brakes on the approach to turn 7, damaging his race tyres. Hamilton narrowly avoided elimination when Esteban Gutiérrez took to the escape road at turn 8; Hamilton arrived on the scene moments after the yellow flags in the sector were removed, allowing him to continue at speed. Romain Grosjean was eliminated in eleventh, having overcome issues with his brake balance. Nico Hülkenberg was a surprise elimination in twelfth, having run consistently at the front of the field throughout the weekend; Hülkenberg's elimination was attributed to a miscommunication between Hülkenberg and his engineer over the amount of fuel he had on board. Carlos Sainz, Jr. and Fernando Alonso finished thirteenth and fourteenth to fill the seventh row of the grid, ahead of Gutiérrez, who had been struggling with pneumonia since the Canadian Grand Prix. Felipe Nasr was the final eliminated driver in sixteenth, marking the second time that Sauber advanced to the second period of qualifying in 2016.

The third and final session was twelve minutes long.[27] Sergio Pérez set the early pace before Hamilton took to the escape road at turn 15, ruining his flying lap and forcing Rosberg and Max Verstappen to slow down. Verstappen made a pit stop for a new set of tyres while the Mercedes drivers stayed out as Mercedes's strategy called for their drivers to set their fastest time on their second flying lap, and there would not be enough time to complete an outlap and two flying laps before the end of the session. Rosberg surpassed Pérez's lap time to claim provisional pole while Hamilton crashed out, clipping the barrier on the inside of turn 10 and breaking his front suspension.[31] The session was immediately red-flagged while Hamilton's car was cleared away, and resumed with just two minutes remaining. This prompted eight drivers – with the exception of the crashed Hamilton and Rosberg, who elected not to go out – to fight for position in the pit lane, as they would have just enough time to complete an outlap in the time remaining, making the running order vital. Daniel Ricciardo led the column of cars out and set a lap time good enough for third place; Sebastian Vettel matched his lap time to the thousandth of a second, and was classified fourth, as Ricciardo had set his lap time first. Kimi Räikkönen finished fifth ahead of Felipe Massa, who was the last driver out of the pit lane when the session resumed and did not complete his outlap before the chequered flag fell. Daniil Kvyat out-qualified team-mate Sainz in seventh, the first time that he had out-qualified a team-mate in 2016. Valtteri Bottas overcame the damage to his car and lack of running during free practice to finish eighth alongside Verstappen, the two having been involved in a series of on-track altercations throughout qualifying. Hamilton finished tenth, with his time of over two minutes having been recorded when he took to the escape road on his first flying lap. During qualifying, Bottas reached the highest ever recorded speed in an official Formula One session, at 378 km/h (235 mph).[32]

Post-qualifying

Sergio Pérez was demoted to seventh with the application of his gearbox penalty, promoting Ricciardo, Vettel, Räikkönen, Massa and Kvyat in the process.[33] Sainz and Magnussen were also demoted, with Magnussen having to start from the pit lane.[34]

Lewis Hamilton was given permission to change his front left tyre ahead of the race.[35] Under the regulations, a driver who qualifies in the top ten must start the race on the set of tyres they used to record their best time in Q2. However, Hamilton's front left tyre (that belonged to the set of tyres that he subsequently used to set his fastest time during his next flying lap) was deemed to be too damaged following his lock-up going into turn 7, necessitating its change.

Classification

Qualifying

Pos. No. Driver Constructor Q1 Q2 Q3 Grid
1 6 Germany Nico Rosberg Mercedes 1:43.685 1:42.520 1:42.758 1
2 11 Mexico Sergio Pérez Force India-Mercedes 1:44.462 1:43.939 1:43.515 71
3 3 Australia Daniel Ricciardo Red Bull Racing-TAG Heuer 1:44.570 1:44.141 1:43.9662 2
4 5 Germany Sebastian Vettel Ferrari 1:45.062 1:44.461 1:43.9662 3
5 7 Finland Kimi Räikkönen Ferrari 1:44.936 1:44.533 1:44.269 4
6 19 Brazil Felipe Massa Williams-Mercedes 1:45.494 1:44.696 1:44.483 5
7 26 Russia Daniil Kvyat Toro Rosso-Ferrari 1:44.694 1:44.687 1:44.717 6
8 77 Finland Valtteri Bottas Williams-Mercedes 1:44.706 1:44.477 1:45.246 8
9 33 Netherlands Max Verstappen Red Bull Racing-TAG Heuer 1:44.939 1:44.387 1:45.570 9
10 44 United Kingdom Lewis Hamilton Mercedes 1:44.259 1:43.526 2:01.954 10
11 8 France Romain Grosjean Haas-Ferrari 1:45.507 1:44.755 11
12 27 Germany Nico Hülkenberg Force India-Mercedes 1:44.860 1:44.824 12
13 55 Spain Carlos Sainz, Jr. Toro Rosso-Ferrari 1:44.827 1:45.000 181
14 14 Spain Fernando Alonso McLaren-Honda 1:45.525 1:45.270 13
15 21 Mexico Esteban Gutiérrez Haas-Ferrari 1:45.300 1:45.349 14
16 12 Brazil Felipe Nasr Sauber-Ferrari 1:45.549 1:46.048 15
17 88 Indonesia Rio Haryanto MRT-Mercedes 1:45.665 16
18 94 Germany Pascal Wehrlein MRT-Mercedes 1:45.750 17
19 22 United Kingdom Jenson Button McLaren-Honda 1:45.804 19
20 9 Sweden Marcus Ericsson Sauber-Ferrari 1:46.231 20
21 20 Denmark Kevin Magnussen Renault 1:46.348 PL1,3
22 30 United Kingdom Jolyon Palmer Renault 1:46.394 21
107% time: 1:50.942
Source:[36]
Notes

Race

Pos. No. Driver Constructor Laps Time/Retired Grid Pts.
1 6 Germany Nico Rosberg Mercedes 51 1:32:52.366 1 25
2 5 Germany Sebastian Vettel Ferrari 51 +16.696 3 18
3 11 Mexico Sergio Pérez Force India-Mercedes 51 +25.241 7 15
4 7 Finland Kimi Räikkönen Ferrari 51 +33.1021 4 12
5 44 United Kingdom Lewis Hamilton Mercedes 51 +56.335 10 10
6 77 Finland Valtteri Bottas Williams-Mercedes 51 +1.00.886 8 8
7 3 Australia Daniel Ricciardo Red Bull Racing-TAG Heuer 51 +1:09.229 2 6
8 33 Netherlands Max Verstappen Red Bull Racing-TAG Heuer 51 +1.10.696 9 4
9 27 Germany Nico Hülkenberg Force India-Mercedes 51 +1.17.708 12 2
10 19 Brazil Felipe Massa Williams-Mercedes 51 +1.25.375 5 1
11 22 United Kingdom Jenson Button McLaren-Honda 51 +1.44.817 19
12 12 Brazil Felipe Nasr Sauber-Ferrari 50 +1 Lap 15
13 8 France Romain Grosjean Haas-Ferrari 50 +1 Lap 11
14 20 Denmark Kevin Magnussen Renault 50 +1 Lap PL
15 30 United Kingdom Jolyon Palmer Renault 50 +1 Lap 21
16 21 Mexico Esteban Gutiérrez Haas-Ferrari 50 +1 Lap 14
17 9 Sweden Marcus Ericsson Sauber-Ferrari 50 +1 Lap 20
18 88 Indonesia Rio Haryanto MRT-Mercedes 49 +2 Laps 16
Ret 14 Spain Fernando Alonso McLaren-Honda 42 Gearbox 13
Ret 94 Germany Pascal Wehrlein MRT-Mercedes 39 Brakes 17
Ret 55 Spain Carlos Sainz, Jr. Toro Rosso-Ferrari 31 Suspension 18
Ret 26 Russia Daniil Kvyat Toro Rosso-Ferrari 6 Suspension 6
Source:
Notes

Standings after the race

Drivers' Championship standings
Pos. Driver Points
1 Germany Nico Rosberg 141
2 United Kingdom Lewis Hamilton 117
3 Germany Sebastian Vettel 96
1 4 Finland Kimi Räikkönen 81
1 5 Australia Daniel Ricciardo       78

Constructors' Championship standings
Pos. Constructor Points
1 Germany Mercedes 258
2 Italy Ferrari 177
3 Austria Red Bull-TAG Heuer 140
4 United Kingdom Williams-Mercedes       90
5 India Force India-Mercedes 59

References

  1. "2016 Formula 1 Grand Prix of Europe". formula1.com. Formula One World Championship Limited. Retrieved 19 June 2016.
  2. "GP Europa in Baku / Rennen". motorsport-total.com (in German). Archived from the original on 22 June 2016. Retrieved 22 June 2016.
  3. 1 2 "FIA confirms 2016 calendar". formula1.com. Formula One World Championship Limited. 2 December 2015. Retrieved 14 May 2016.
  4. "2016 Driver Standings". formula1.com. Formula One World Championship Limited. Archived from the original on 16 June 2016. Retrieved 18 June 2016.
  5. "2016 Constructor Standings". formula1.com. Formula One World Championship Limited. Archived from the original on 16 June 2016. Retrieved 18 June 2016.
  6. Sylt, Christian. "Exclusive: Korean GP dropped to make way for race in Azerbaijan". The Independent. Independent Print Limited. Retrieved 15 May 2016.
  7. "Formula 1 – Azerbaijan Grand Prix debut delayed until 2016". uk.sports.yahoo.com. Yahoo! Sports. Reuters. Retrieved 14 May 2016.
  8. Noble, Jonathan. "Whiting says Baku F1 circuit will be ready". motorsport.com. Retrieved 31 May 2016.
  9. "Concerns raised over Baku street circuit safety". speedcafe.com. 17 June 2016. Retrieved 17 June 2016.
  10. Galloway, James (18 June 2016). "Baku F1 circuit tweaked after kerbing issues in practice". Baku: Sky Sports. Archived from the original on 18 June 2016. Retrieved 18 June 2016.
  11. Cooper, Adam (17 June 2016). "FIA plans overnight changes to Baku pit entry and curbs". Foxsports.com. Baku: Fox Sports Digital Media. Retrieved 18 June 2016.
  12. "Ultrasoft tyres to debut in Monaco". formula1.com. Formula One Administration. 24 March 2016. Retrieved 17 May 2016.
  13. Parkes, Ian (3 March 2016). "Pirelli will not take ultra-soft tyres to inaugural Azerbaijan race". autosport.com. Haymarket Publications. Retrieved 17 May 2016.
  14. Saunders, Nate (7 March 2016). "No ultra-soft tyre in Baku due to lack of data". ESPN F1. ESPN. Retrieved 17 May 2016.
  15. Elizalde, Pablo (6 June 2016). "Supersofts dominate European GP tyre selections". Motorsport.com. Motorsport Network, LLC. Retrieved 16 June 2016.
  16. 1 2 Cooper, Adam (15 June 2016). "Pirelli fears standing wave issue on Baku straights". Motorsport.com. Baku: Motorsport Network, LLC. Retrieved 16 June 2016.
  17. "Officials forced to make Baku kerb repairs". speedcafe.com. 17 June 2016. Retrieved 18 June 2016.
  18. Allen, James (16 June 2016). "European Grand Prix preview: not like anything we've seen before in F1". James Allen on F1. James Allen. Retrieved 16 June 2016.
  19. "GP2 Series 2016 season calendar confirmed". gp2series.com. GP2 Motorsport Limited. 4 March 2016. Retrieved 14 May 2016.
  20. Collantine, Keith (25 July 2014). "Unhappy Horner hits out at 'negative focus'". F1 Fanatic. Keith Collantine. Archived from the original on 24 May 2015. Retrieved 14 May 2016.
  21. Collantine, Keith (10 September 2014). "Sirotkin to make F1 practice debut in Russia". Archived from the original on 23 July 2015. Retrieved 14 May 2016.
  22. Baldwin, Alan (22 August 2014). "F1 has "no argument" with Russia says Ecclestone". Reuters. Francorchamps: Thomson Reuters. Reuters. Archived from the original on 14 October 2015. Retrieved 16 May 2016.
  23. Weaver, Paul (7 June 2016). "F1 urged to speak out on human rights situation in Azerbaijan". The Guardian. Guardian Media Group. Archived from the original on 8 June 2016. Retrieved 8 June 2016.
  24. "2016 FIA WEC Calendar Announced, Mexico Race Added". DailySportsCar. 19 September 2015. Retrieved 15 May 2016.
  25. Collantine, Keith (2 February 2016). "No wonder FOM arranged Baku to clash with Le Mans". F1 Fanatic. Keith Collantine. Retrieved 16 May 2016.
  26. Noble, Jonathan. "Baku organisers confirm start time change for F1 race". Motorsport.com. Motorsport Network, LLC. Retrieved 31 May 2016.
  27. 1 2 3 4 "Practice and qualifying". formula1.com. Formula One World Championship Limited. Archived from the original on 1 May 2016. Retrieved 1 May 2016.
  28. Codling, Stuart (17 June 2016). "Lewis Hamilton fastest in first Baku Formula 1 practice session". autosport.com. Archived from the original on 18 June 2016. Retrieved 18 June 2016.
  29. Barretto, Lawrence (17 June 2016). "Hamilton on top in Baku F1 practice, trouble for Rosberg, Ferrari". autosport.com. Archived from the original on 18 June 2016. Retrieved 18 June 2016.
  30. Barretto, Lawrence (18 June 2016). "Lewis Hamilton grabs Baku F1 practice top spot from Nico Rosberg". autosport.com. Archived from the original on 18 June 2016. Retrieved 18 June 2016.
  31. Lines, Chris (18 June 2016). "Rosberg takes pole in Baku as Hamilton crashes out". Associated Press. Baku: AP Sports. Associated Press. Retrieved 19 June 2016.
  32. Collantine, Keith (20 June 2016). "Williams hit record speeds on and off the track". F1Fanatic. Archived from the original on 20 June 2016. Retrieved 20 June 2016.
  33. 1 2 Barretto, Lawrence (18 June 2016). "Sergio Perez penalised for gearbox change after Baku F1 crash". autosport.com. Archived from the original on 18 June 2016. Retrieved 18 June 2016.
  34. 1 2 3 "2016 Grand Prix of Europe – Official Starting Grid". FIA. 2016-06-19. Retrieved 2016-06-20.
  35. Mercedes [@MercedesAMGF1] (19 June 2016). "Speaking of @pirellisport,we can confirm that the team received permission to swap the left front tyre of @LewisHamilton's race start set" (Tweet). Retrieved 19 June 2016 via Twitter.
  36. "2016 Formula 1 Grand Prix of Europe – Qualifying". formula1.com. Formula One World Championship Limited. 18 June 2016. Archived from the original on 18 June 2016. Retrieved 18 June 2016.
  37. Shemetov, Maxim (19 June 2016). "Daniel Ricciardo makes the front row in Azerbaijan Formula 1 Grand Prix". abc.net.au. Australian Broadcasting Company. Reuters. Retrieved 19 June 2016.

External links

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