Red Bull RB11

{{Short description|2015 Formula One racing car}}

{{Racing car

| Car_name = Red Bull RB11

| Image = 300px

|Caption=Daniel Ricciardo driving the RB11 at the {{F1 GP|2015|Canadian}}

|Image_size=300px

| Category = Formula One

| Constructor = Red Bull

| Designer = Adrian Newey {{smaller|(Chief Technical Officer)}}
Rob Marshall {{smaller|(Chief Engineering Officer)}}
Steve Winstanley {{smaller|(Chief Engineer, Composites and Structures)}}
Dave Worner {{smaller|(Chief Engineer, Mechanics and Suspension)}}
Pierre Waché {{smaller|(Chief Engineer, Performance)}}
Dan Fallows {{smaller|(Chief Engineer, Aerodynamics)}}
Pete Machin {{smaller|(Chief Aerodynamicist)}}

| Predecessor = Red Bull RB10

| Successor = Red Bull RB12

| Team = Infiniti Red Bull Racing

| Drivers = 3. {{flagicon|AUS}} Daniel Ricciardo{{cite web|title=Daniel Ricciardo has earned 2015 drive - Horner|url=http://en.espnf1.com/redbull/motorsport/story/158549.html/|publisher=ESPN F1|date=16 May 2014|url-status=dead|archive-url=https://web.archive.org/web/20141006194810/http://en.espnf1.com/redbull/motorsport/story/158549.html|archive-date=6 October 2014}}
26. {{flagicon|RUS}} Daniil Kvyat{{cite web|title=Vettel to leave Red Bull after 2014; Kvyat to be promoted|url=http://www.formula1.com/news/headlines/2014/10/16433.html|publisher=Formula 1|date=4 October 2014}}

| Technical ref =

| Chassis = Composite monocoque structure, designed and built in-house, carrying the Renault V6 as fully stressed member.

| Front suspension = Aluminium alloy uprights, carbon-composite double wishbone with springs and anti-roll bar, Multimatic dampers

| Rear suspension = Same as front

| Brakes = Brembo calipers

| Length = {{convert|5070|mm|in ft|0|abbr=on}}

| Width = {{convert|1800|mm|in ft|0|abbr=on}}

| Height = {{convert|950|mm|in ft|0|abbr=on}}

| Wheelbase = {{convert|3150|mm|in ft|0|abbr=on}}

| Track = Front: {{convert|1470|mm|in|0|abbr=on}}
Rear: {{convert|1405|mm|in|0|abbr=on}}

| Engine name = Renault Energy F1-2015

| Capacity = {{convert|1.6|L|cuin|0|abbr=on}}

| Configuration = V6 (90°).

| Turbo/NA = turbo, 15,000 RPM

| Engine position = mid-mounted.

| Power = 850 hp{{cite web | url=https://www.redbullracing.com/int-en/cars/rb11/ | title=The Cars }}

| Gearbox name = Red Bull Technology

| Gears = Semi-automatic eight-speed gearbox,

| Type = longitudinally mounted with hydraulic system for power shift and clutch operation

| Differential =

| Weight = {{convert|702|kg|abbr=on}}

| Fuel = Total Excellium

| Lubricants = Total Quartz 9000

| Tyres = Pirelli P Zero (dry), Cinturato (wet)
O.Z. Racing wheel rims, Front: 12.0in x 13in diam., Rear: 13.7in x 13in diam.

| Debut = 2015 Australian Grand Prix

|Last_event=2015 Abu Dhabi Grand Prix

| Races = 19

| Wins = 0

| Podiums = 3

| Poles = 0

| Fastest_laps = 3

}}

The Red Bull RB11 is a Formula One racing car designed by Adrian Newey for Infiniti Red Bull Racing to compete in the 2015 Formula One season.{{cite web|title=Newey penned the new Red Bull RB11 says Horner|url=http://www.grandprix247.com/2015/01/28/newey-penned-the-new-red-bull-rb11-says-horner/|publisher=GrandPrix 247|date=29 January 2015}} It was driven by Daniel Ricciardo and Daniil Kvyat. This was the last Red Bull car with engines originally badged as "Renault" and to feature their title sponsor Infiniti as they split from Red Bull at the end of the season due to a breakdown in the team's relationship with Renault.

After good results in previous seasons, 2015 was not a successful season for Red Bull. This was mainly due to the Renault engine lacking performance and reliability, compared to the Mercedes and Ferrari power units. They were also unable to compete with Mercedes as they did in 2014, and also lost out to Ferrari and Williams, finishing fourth overall in the Constructors' Championship. The team suffered their first winless season since 2008 and their last as of the end of 2024, with the best results being 2nd for Kvyat in Hungary and Ricciardo in Singapore.