Ligier Nissan DPi
Onroak Nissan DPi

Category	Daytona Prototype International
Constructor	Ligier Automotive
Designer(s)	Nicolas Clémençon
Technical specifications [1]
Chassis	Carbon fibre monocoque
Suspension (front)	Double wishbones with pushrod and torque rod-activated dampers
Suspension (rear)	Double wishbones with spring-activated dampers
Length	4,745 mm (186.8 in)
Width	1,900 mm (75 in)
Wheelbase	3,010 mm (119 in)
Engine	Nissan VR38DETT 3.8 litre V6 twin turbo   longitudinal mid-mounted configuration
Transmission	Hewland TLS-200 6-speed sequential gearbox magnesium casing sequential manual transmission
Power	599 hp (447 kW)
Weight	Appr. 930 kg (2,050 lb)
Tyres	Michelin, or Continental
Competition history
Notable entrants	Tequila Patrón ESM CORE Autosport
Notable drivers	Scott Sharp Johannes van Overbeek Ed Brown Brendon Hartley Pipo Derani Bruno Senna Ryan Dalziel Olivier Pla Norman Nato Nicolas Lapierre Timo Bernhard Jon Bennett Colin Braun Romain Dumas Loïc Duval
Debut	2017 24 Hours of Daytona
First win	2017 Continental Tire Road Race Showcase
Last win	2018 Monterey Grand Prix
Last event	2019 Petit Le Mans
Races Wins Podiums Poles 30 4 8 4
Teams' Championships	0
Constructors' Championships	0
Drivers' Championships	0

The Ligier Nissan DPi, also known as the Onroak Nissan DPi is a Daytona Prototype car built by Ligier Automotive. The car is based on the Ligier JS P217, which was built to meet the 2017 FIA and ACO regulations for 2017 for the LMP2 category in the FIA World Endurance Championship. The prototype made its racing debut at the 2017 24 Hours of Daytona, with the Tequila Patrón ESM team, finishing 4th on its debut. ^[2]

Development

On 21 September 2016, it was announced by Scott Sharp, the team owner of Tequila Patrón ESM, that the team would be returning to the IMSA WeatherTech SportsCar Championship full time for 2017, and departing the FIA World Endurance Championship. Simultaneously, it was announced that the team would be renewing its agreement with OAK Racing, and Onroak Automotive, and signing a new multi-year partnership with Nissan Nismo, who would supply the team the VR38DETT 3.8L V6 engine used in the Nissan GT-R GT3. ^[3] It had been earlier rumored that the team would be running the VRX30A that had been run in the ill-fated Nissan GT-R LM Nismo, which was later refuted by the announcement. ^[4] The programme would be a non-works supported, customer effort, and it was later revealed that ESM had signed an exclusivity agreement with Nissan for 2 years. ^[5] The car had its unveiling and shakedown at the Sebring International Raceway in Florida, on 22 December 2016. ^[6] Between the JS P217 and the DPi, a number of differences were noted, with a large front panel covering the nose area, alongside revised side panels. ^[7] The final design of the car was also noted to be different from the initial proposals to the Championship governing body, the International Motor Sports Association. ^[8]

The car was noted to be overweight, compared to its base sibling, the Ligier JS P217, owing to the Nissan VR38DETT engine being over 50 kilograms heavier than the Gibson Technology powerplant utilized in the JS P217. ^[9]

Racing history

2017 season

The 2017 season began at the 2017 Rolex 24 At Daytona, with both cars showing strong pace, with the #2 car even leading the race during the rainy night portion of the race, but a number of electrical problems, a penalty as well as a number of spins in the wet saw the team finish just outside the podium, in 4th. ^[10] At the 2017 BUBBA Burger Sports Car Grand Prix, held at the Long Beach Street Circuit, the team would score its first podium with the car, with the #2 car scoring a 2nd place finish, and the fastest lap of the race. ^[11] At the 6 Hours of Watkins Glen, Pipo Derani scored the first Pole position for the car. ^[12] The #22 car would secure the first win for the car at the Continental Tire Road Race Showcase, held at Road America, with the team scoring a 1-3 finish and breaking the 7-race win streak for the Cadillac DPi-V.R. ^{[13] [14]} This first win for the car came following a change in the car's electronics from Cosworth to Motec, which had been made in an attempt to increase the reliability of the car. ^[15] Later, at the season ending Petit Le Mans, the #2 car would benefit from late penalties for the sister #22 car, and the #5 Mustang Sampling Racing cars to win. ^[16]

2018 season

The 2018 season started with a double retirement at the 2018 Rolex 24 at Daytona, in spite of the #22 car leading the race for several laps. ^[17] At the following race, the 12 Hours of Sebring, the team would bounce back, scoring a win, following a strong late-race drive by Pipo Derani. ^[18] Following the disastrous weekend during the 6 Hours of Watkins Glen, where the team had used 3 engines, and suffered 2 engine failures, the team scaled down its entry to a single car at the Canadian Tire Motorsport Park. ^[19] Even after the announcement by Patrón that they were to end its involvement in motorsports, Extreme Speed Motorsports had still aimed and intended to continue its participation in the 2019 season with the car. ^[20] The team later announced it was to relinquish its exclusivity deal with Onroak Automotive, making the car available for purchase with other teams through Onroak. ^[21] At the America's Tire 250, held at the WeatherTech Raceway Laguna Seca, the car would score its 4th and final win under ESM, ^[22] and while Derani would score a pole for his final race with the team at the 2018 Petit Le Mans, the team was unable to repeat its win in the previous edition of the race, with the #22 finishing in 6th, while the #2 car would finish 11th. ^[23] Following the end of the season, ESM would sell both cars to CORE Autosport, before closing its doors.

2019 season

Due to the withdrawal of title sponsor Patrón Spirits, ESM was forced to shut its doors in November 2018. ^[24] Subsequently, CORE Autosport announced it would run one car, having acquired both ESM chassis. ^[25] On 23 August 2019, it was announced by CORE Autosport, that due to the retirement of team owner/driver Jon Bennett, the team would be ceasing its Daytona Prototype International programme, following the season ending 2019 Petit Le Mans, and solely shift its focus on the Porsche factory GT Le Mans Programme. ^[26] It has also been said that the discontinuation of the programme at CORE Autosport would likely mean an end to racing for the car, as it was known that Nissan had previously shown little interest in supporting the effort. ^{[27] [28]}

Results summary

Complete IMSA SportsCar Championship results

(key) Races in bold indicates pole position. Races in italics indicates fastest lap. (key) Races in bold indicates pole position. Races in italics indicates fastest lap.

Complete IMSA SportsCar Championship results

Year	Entrant	Class	Drivers	No.	Rds.	Rounds										Pts.	Pos.
						1	2	3	4	5	6	7	8	9	10
2017	Tequila Patrón ESM	P	Ryan Dalziel Scott Sharp Pipo Derani Brendon Hartley	2	All All 1-2, 6 1, 12	DAY 4	SEB 11	LBH 2	COA 6	BEL 8	WGL 7	MOS 3	ELK 3	LGA 6	ATL 1	273	5th
			Johannes van Overbeek Ed Brown Bruno Senna Brendon Hartley Pipo Derani	22	All 1-5 1-2, 6, 12 1-2 7, 9, 11-12	DAY 7	SEB 10	LBH 9	COA 5	BEL 7	WGL 8	MOS 9	ELK 1	LGA 8	ATL 4	249	6th
2018	Tequila Patrón ESM	P	Ryan Dalziel Scott Sharp Olivier Pla Norman Nato	2	1-6, 9, 11-12 1-2, 6 12	DAY 19	SEB 16	LBH 2	MOH 10	BEL 4	WGL 15	MOS	ELK 9	LGA 11	ATL 11	186	13rd
			Pipo Derani Johannes van Overbeek Nicolas Lapierre Ryan Dalziel Timo Bernhard	22	All 1-6, 9, 11-12 1-2, 6 7 12	DAY 18	SEB 1	LBH 12	MOH 9	BEL 7	WGL 16	MOS 12	ELK 6	LGA 1	ATL 6	232	9th
2019	CORE Autosport	DPi	Jon Bennett Colin Braun Romain Dumas Loïc Duval	54	All All 1-2, 6, 12 1	DAY 4	SEB 5	LBH 11	MOH 11	BEL 7	WGL 11	MOS 7	ELK 10	LGA 7	ATL 8	230	9th

References

External links

• Onroak Automotive