{{use british english|date=September 2025}} {{refimprove|date=September 2025}} {{Infobox engine | name = BMW P66 (2012-2016)<br>BMW P66/1 (2017-2018)<br>BMW P66/3 (2022-present) | image = | manufacturer = BMW Motorsport | production = 2012-present | configuration = {{ubl | V8 naturally aspirated, 90° cylinder angle (2012-2018) | twin-turbocharged, 90° cylinder angle (2022-present) }} | displacement = {{cvt|4.0|L|cuin|0}} | bore = {{cvt|93|mm|in|2}} | stroke = {{cvt|73.6|mm|in|2}} | block = Aluminum alloy | head = Aluminum alloy | valvetrain = 32-valve (four valves per cylinder) DOHC | turbocharger = Twin (2022-present) | power = {{cvt|480|hp|kW|0}} (2012-2016) later over {{cvt|500|hp|kW|0}} (2017-2018) @ 7,500 rpm | torque = Approx. {{cvt|500|Nm|ftlbf|0|lk=on}} | coolingsystem = Single water pump | weight = {{cvt|326|lb|kg|0}} excluding headers, clutch, ECU, spark box or filters | fuelsystem = {{ubl | Electronic indirect multi-point fuel injection (2012-2018) | {{cvt|350|bar|psi|0|lk=on}} gasoline direct injection (2022-present) }} | management = Bosch Motronic MS 5.1 | fueltype = Aral Ultimate 102 RON unleaded racing gasoline | oilsystem = {{ubl | Castrol EDGE Supercar 10W-60 fully synthetic lubricant, dry sump (2012-2014) | Shell Helix Ultra 0W-40 fully synthetic lubricant, dry sump (2015-2018) }} | predecessor = BMW P65 (V8) | successor = BMW P48 Turbo (I-4t) | similar = }} The '''BMW P66 Series''' is a prototype four-stroke 4.0-litre naturally aspirated V8 racing engine, developed and produced by BMW Motorsport in partnership with AC Schnitzer (reassembly, arrangement, preparation, maintenance, trackside support and tune-up) for Deutsche Tourenwagen Masters. BMW P66 Series was unveiled on 18 July 2011 alongside BMW M3 DTM (E92) machine at BMW Welt in Munich, Germany.<ref>{{cite web |title=BMW M3 DTM Concept Car (2011) first official pictures |url=https://www.carmagazine.co.uk/car-news/first-official-pictures/bmw/bmw-m3-dtm-concept-car-2011-first-official-pictures/ |work=Car |date=18 July 2011 |access-date=18 July 2011 |first=Ben |last=Pulman}}</ref> The BMW P66 Series engine lifespan was only lasted seven years and later permanently retired in 2019 and later restored in 2022 in order to supply engines for BMW M Hybrid V8 LMDh machine.
==BMW P66 (2012-2016) {{anchor|BMW P66|P66}} == The BMW P66 engine generates approx. 480 bhp with the air restrictor specified in the technical regulations. BMW began development, design and construction of the NA V8 engine in November 2010. The first NA V8 engine was assembled in June 2011, with the first engine completed in late-August. Codenamed P66 it was intended to see its first race in the 2012 DTM season. It is made up of 800 different components, consisting of 3,900 individual parts. When designing the DTM drivetrain, BMW Motorsport took full advantage of the technological know-how within the BMW Group. The high-tech foundry connected to BMW Plant Landshut accounts for the large cast parts, such as the cylinder head and crankcase – just as it does in the production of the six-cylinder in-line engine for the BMW M4 Coupé. The cast parts are coated and given the necessary heat treatment within the appropriate departments in Munich. Only ten engines are permitted for all eight BMWs over the course of the entire season.
The engine's power is transferred via a sequential six-speed sport gearbox, which is operated pneumatically using shift paddles mounted on the steering wheel. The gearbox is one of the standard components, which are used by all the DTM manufacturers. It has 11 final drive ratios, which allow the engineers and drivers to react to the respective circuit and engine characteristics when setting the car up.
The BMW P66 engine was installed in BMW M3 DTM machines from 2012 to 2013 and later BMW M4 DTM in from 2014 to 2016. The BMW P66 engine captured 24 race wins, 26 pole positions, 18 fastest laps and 3 engine manufacturer titles.
===Applications=== * BMW M3 DTM (E92) * BMW M4 DTM
==BMW P66/1 (2017-2018) {{anchor|BMW P66/1|P66/1}} == The BMW P66/1 engine was a subtle updated version of P66 engine to conform 2017 DTM engine regulations. The intake air restrictor was slightly increased from {{cvt|28|to|29|mm|in|2}} and also power increase from {{cvt|480|to|500|hp|kW|0|}}. The 2017 DTM engine regulations allow for enhancement in special intake-system areas special areas to optimise the engine's performance even more. Nonetheless, maximum longevity still represents a top priority of the DTM engines’ design. Blown engines are extremely rare in DTM and usually, the engines survive the entire season. During the course of the season, cost-intensive engine revisions aren't allowed in DTM as the sealed engines only may be subjected to services in this period of time, according to the regulations.<ref>{{cite web |title=2017 DTM Cars: More Power and Less Downforce |url=https://www.dtm.com/en/news/2017-dtm-cars-more-power-and-less-downforce-2017-03-17.html |work=DTM.com |publisher=Deutsche Tourenwagen Masters |date=17 March 2017 |access-date=17 March 2017}}{{dead link|date=September 2025}}</ref>
BMW P66/1 was proved less successful compared to previous P66 version that scored four wins, twelve pole positions and six fastest laps. BMW P66/1 was the last-ever BMW V8 naturally aspirated DTM engine to date.
===Applications=== * BMW M4 DTM
==BMW P66/3 (2022-present) {{anchor|BMW P66/3|P66/3}} == {{expandsection|date=June 2023}} The BMW P66/3 engine is an updated direct injected twin-turbocharged version of the P66/1 engine to conform to 2023 LMDh engine regulations, with engine power set to {{cvt|640|hp|kW|0}}.<ref>{{cite web |title=The heart of the BMW M Hybrid V8: P66/3 eight-cylinder hybrid turbo engine drives the LMDh prototype |url=https://www.press.bmwgroup.com/usa/article/detail/T0402285EN_US/the-heart-of-the-bmw-m-hybrid-v8:-p66/3-eight-cylinder-hybrid-turbo-engine-drives-the-lmdh-prototype?language=en_US |publisher=BMW Group |date=14 July 2022 |access-date=30 June 2023}}</ref>
===Applications=== * BMW M Hybrid V8
==References== {{reflist}}
==External links== * [https://www.bmw-motorsport.com/en/topics/season-2018/programme-2019/dtm.html BMW Motorsport DTM Division Official Website] {{BMW automotive petrol engines: 2000s to 2010s|state=collapsed}}
P66 Series P66 Series Category:Gasoline engines by model Category:Deutsche Tourenwagen Masters Category:V8 engines Category:2010s automobile engines