Prince is the codename for a family of automobile straight-4 engines developed by PSA Peugeot Citroën and BMW. It is a compact engine family of 1.4–1.6 L in displacement and includes most modern features including gasoline direct injection, turbocharging, BMW VANOS and variable valve timing.
|PSA Prince engine|
|Displacement||1.4–1.6 L (85–98 cu in)|
|Valvetrain||DOHC, with VVT & VVL|
PSA TU engine
PSA ES engine
PSA EW engine
|Successor||BMW B38 (BMW)|
The BMW versions of the Prince engine are known as the N13 and the Mini versions are known as the N14 and N18. It replaced the Tritec engine family in the Mini and was first introduced in 2006 for MINI. Later in 2011 also for BMW models F20 116i and 118i. This was the first longitudinal engine mount option for Prince engine.
The engine's components are produced by PSA at their Douvrin, France, facility, with MINI and BMW engine assembly at Hams Hall in Warwickshire, UK. The co-operation was announced on 23 July 2002 with the first engines produced in 2006. The Prince engine project is not related to the Prince Motor Company.
In late 2006, an extension of the cooperation between the two groups was announced, promising new four-cylinder engines, without further details.
On 29 September 2010, it was announced by BMW that the 1.6Turbo version of the Prince engine would be supplied from 2012 to Saab for use in forthcoming models, primarily the 9-3. However with the closure of SAAB supply never started.
At the Geneva Auto Show 2011, Saab unveiled their latest concept vehicle Saab PhoeniX with BMW Prince Engine 1.6T 200 bhp (149 kW; 203 PS); 
On 25 June 2014 1.6-litre turbo Prince engine won its eighth consecutive International Engine of the Year Award in the 1.4 to 1.8-litre category. In 2014 the Prince engine beat, among others, the new BMW B38 engine which is replacing the Prince engine in the Mini and BMW lineups.
The Prince family shares its basic block dimensions with the previous PSA TU engine family. Engineering design was directed by PSA with some support provided by BMW, including their Valvetronic variable valve lift system on the intake side. Other features include on-demand oil and water pumps. Gasoline direct injection with a twin-scroll turbocharger will be used on the higher power versions.
All Prince engines will share 84 mm (3.31 in) cylinder bore spacing, with 77 mm (3.03 in) bore. The 1.6 litre engine has a stroke of 85.8 mm (3.38 in). The engine features a two-piece "bedplate" aluminum crankcase for extra stiffness.
1.4 litre EP3/EP3C (PSA)Edit
The 1.4 L PSA EP3 and EP3C is the smallest member of the Prince family with a stroke measuring 75 mm (2.95 in) and total capacity of 1,397 cc (1.4 L). Depending on application, power output varies from 90 to 95 PS (66 to 70 kW; 89 to 94 bhp) while torque varies from 136 to 140 N⋅m (100 to 103 lb⋅ft).
1.6 litre EP6/EP6C naturally aspirated (PSA)Edit
The naturally aspirated variant (EP6, EP6C) has conventional fuel injection and lost-foam cast cylinder heads. Its 11:1 compression ratio creates an output of 120 PS (88 kW; 118 bhp) at 6000 rpm with a redline of 6500 rpm. Torque is 160 N⋅m (118 lb⋅ft) at 4250 rpm.
- 2007–2012 Peugeot 207 Sport
- 2007–2010 MINI Cooper
- 2011–present Mini One
- 2012–2015 Peugeot 208
- 2013–2015 Peugeot 2008
- 2007–2013 Peugeot 308 (308 CC until 2015)
- 2010–2015 Peugeot 3008
- 2011–2015 Peugeot 508
- 2008–2014 Citroën C4
- 2009–2016 Citroën DS3
- 2009–2015 Citroën DS4
- 2009–2014 Citroën C3
- 2009–2017 Citroën C3 Picasso
1.6 litre turbocharged (PSA)Edit
At first, there were two versions on offer - the THP150 and THP175, also known as the EP6DT and EP6DTS respectively within Peugeot. The first was later updated as EP6CDT and also a THP163, EP6CDTM. There is also EP6CDT MD - with lowered compression ratio.
For the THP150 maximum torque is 240 N⋅m (177 lb⋅ft) at 1400 rpm, remaining flat to 5000 rpm. Power output is 150 PS (110 kW; 148 bhp) at 5500 rpm.
- 2006–2014 Peugeot 207 CC/GT
- 2007–present Peugeot 308
- 2011–present Peugeot 508
- 2010–present Peugeot RCZ (THP156)
- 2008–present Citroën C4
- 2008–present Citroën C4 Picasso
- 2013–present Citroën C4 Sedan - the car assembled in Russia, Kaluga
- 2009–present Citroën DS3
- 2010–present Citroën DS4
- 2012–present Citroën DS5
- 2011–present Peugeot 408 Sport
- 2012–present Peugeot 208
For the THP163 maximum torque is 240 N⋅m (177 lb⋅ft) at 1400 rpm, remaining flat to 5000 rpm. Power output is 165 PS (121 kW; 163 bhp) at 5500 rpm.
For the THP175 (EP6DTS, later EP6CDTS) maximum torque is 247 N⋅m (182 lb⋅ft) at 1600 rpm, remaining flat to 5000 rpm. Power output is 175 PS (129 kW; 173 bhp) at 5500 rpm. An overboost function is available which temporarily increases torque to 260 N⋅m (192 lb⋅ft) between 1700 rpm and 4500 rpm in gears 3 to 5.
- 2006–2010 Peugeot 207 RC
- 2007–2010 MINI Cooper S
- 2007-2011 MINI JCW (154 kW version of engine - only used by BMW)
- 2008–present Peugeot 308
- 2010–present Citroën DS3 Racing - EP6CDTS - 202 hp
In 2010 Peugeot released 1.6 THP engine (EP6CDTX) with 200 bhp (149 kW; 203 PS) at 5500 RPM, maximum torque 275 N⋅m (203 lb⋅ft) @ 1700 rpm. It featured direct injection, twin-scroll turbocharger and Valvetronic variable valve lift.
- 2010–present Peugeot RCZ
- 2010–present Peugeot 308 GTi
- 2010–present Citroën DS4
- 2012–present Peugeot 208 GTi
The 2012-2014 Mini John Cooper Works GP featured additional performance, with 218 PS (215 bhp; 160 kW) at 6000 rpm and 280 N⋅m (207 lb⋅ft) of torque at 2000–5100 rpm from a larger turbo and engine internals.
PSA has now released a new Euro 6 engine based on the THP in the following Engine codes:
- EP6FDT - 178 bhp (133 kW; 180 PS) 1.6l PureTech 180 Peugeot 508 GT-Line 180
- EP6FDTX - 205 bhp (153 kW; 208 PS)/208 bhp (155 kW; 211 PS)/210 bhp (157 kW; 213 PS) 1.6l THP Peugeot 208 GTi
- EP6FDT - 222 bhp (166 kW; 225 PS) 1.6l PureTech 225 Peugeot 508 GT-Line 225
- EP6FDTR - 250 bhp (186 kW; 253 PS)/270 bhp (201 kW; 274 PS) 1.6l THP Peugeot 308 GTi
- EP6CDTR - 270 bhp (201 kW; 274 PS) 1.6l THP Peugeot RCZ
BMW N13 versionEdit
The turbocharged 1.6 litre version used by BMW is called the BMW N13. The N13 replaced the naturally aspirated BMW N43 engine and was produced from 2011 to 2016. It is BMW's first turbocharged four-cylinder petrol engine since the BMW 2002 Turbo ceased production in 1974.
|N13B16||1,598 cc (97.5 cu in)||101 kW (136 bhp)
at 4,350 rpm
|220 N⋅m (162 lb⋅ft)
at 1,350 rpm
|127 kW (170 bhp)
at 4,800 rpm
|250 N⋅m (184 lb⋅ft)
at 1,500 rpm
75 kW version
- 2012–2015 F20 114i
100 kW version
125 kW version
130 kW version
Mini N14 and N18 versionsEdit
The turbocharged 1.6 litre versions used by Mini are called the Mini N14 and Mini N18. The N18 succeeded the N14 and had double Vanos. The N14/N18 engine uses direct injection, a twin-scroll turbocharger and Valvetronic (variable valve lift).
There has been several cases of recalls and/or extended warranty due to failing HPFP (high pressure fuel pumps) in the Prince engine 
In 2015 it was announced, on the Hong Kong Stock exchange, that BMW had signed an IPR deal with XCE. They will make the N18 TVDI engine in China for use in various Brilliance Automotive vehicles (JV Partner of BMW in China) and also for other China OEM's.
PSA will continue to develop the higher power models of the engine family, with future production planned for China with its JV partners DONFENG (DPCA) and Changan（CAPSA）.
- Press release (in French)
- Reed, John (2010-09-29). "FT article". FT article. Retrieved 2012-08-30.
- Swade (2010-09-29). "SaabsUnited coverage of Saab press release". Saabsunited.com. Retrieved 2012-08-30.
- "Saab PhoeniX Concept Official Photos and Info - Auto Shows". Caranddriver.com. 2012-08-26. Retrieved 2012-08-30.
- Eighth consecutive International Engine of the Year Award for PSA Peugeot Citroën Archived 2014-07-10 at the Wayback Machine
- International Engine of the Year Award results in 1.4-Litre to 1.8-Litre
- "Petrol Engines in the BMW Group/PSA Peugeot Citroën Cooperation" (PDF). December 2004.
-  Archived November 27, 2010, at the Wayback Machine
- "2007 Mini Preview - Press Release". Archived from the original on January 26, 2013. Retrieved August 15, 2006.
- "2012 MINI John Cooper Works GP". carfolio.com. March 13, 2013. Retrieved July 27, 2018.
- "Archive » The Mighty Prince Engine: It's Future on the Road & in Motorsport". MotoringFile. 2011-11-23. Retrieved 2012-08-30.
- "BMW-1er-F20-116i-118i-technische-Daten-1". Bimmertoday.de. 2011-06-05. Retrieved 2012-06-03.
- "Model selection - 1'F20 LCI - 120i - EUR - 05/2016". www.realoem.com. Retrieved 2 November 2019.
- BMW recalls fuel pumps, Mini does not
- MINI’s Prince Engine is Dead. Enter the B37 & B48.
- PSA will keep using the Prince engine family Archived 2014-06-07 at the Wayback Machine