VR6 engine: Difference between revisions

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{{Distinguish|Nissan VR engine}}
{{Distinguish|Nissan VR engine}}
{{Infobox automobile engine
{{Infobox automobile engine
| name = Volkswagen VR6
| image = 2.9VR6 140kW ABV Corrado.jpg
| image = 2.9VR6 140kW ABV Corrado.jpg
| caption = 1991–1995 [[Volkswagen Corrado]] 2.9 litre engine
| caption = 1991–1995 [[Volkswagen Corrado]] 2.9 litre engine
Line 6: Line 7:
| displacement = {{convert|2.5|-|3.6|L|cuin|0|abbr=on}}
| displacement = {{convert|2.5|-|3.6|L|cuin|0|abbr=on}}
| valvetrain = 1991–2002: 12 valves<br />1999–2024: 24 valves
| valvetrain = 1991–2002: 12 valves<br />1999–2024: 24 valves
| supercharger =
| supercharger =  
| turbocharger =
| turbocharger =  
| fueltype = Petrol
| fueltype = Petrol
}}
}}


The '''VR6 engine''' is a six-cylinder engine configuration developed by [[Volkswagen]]. The name VR6 comes from the combination of German words "Verkürzt" and "Reihenmotor" meaning "shortened inline engine" referring to the VR-engine having characteristics of inline layout but shortened. It was developed specifically for transverse engine installations and FWD (front-wheel drive) vehicles. The VR6 is a highly compact engine, thanks to the narrower angle of 10.5 to 15 degrees between cylinder banks, as opposed to the traditional V6 angles ranging from 45 to 90 degrees. The compact design is cheaper to manufacture, since only one cylinder head is required for all six cylinders, much like a traditional inline-6 engine.
The '''VR6 engine''' is a six-cylinder engine configuration developed by [[Volkswagen]]. The name VR6 comes from the combination of German words “verkürzt” and “Reihenmotor” meaning "Shortened" and “inline engine” respectively. It was developed specifically for transverse engine installations and [[front-wheel drive]] (FWD) vehicles. The VR6 is a highly compact engine, due to the narrower angle of 10.5 to 15 degrees between cylinder banks, as opposed to the traditional V6 angles ranging from 45 to 90 degrees. The compact design is cheaper to manufacture, since only one cylinder head is required for all six cylinders, much like a traditional inline-6 engine.


[[Volkswagen Group]] introduced the first VR6 engine in 1991 and VR6 engines remained in production until late 2024.<ref name="2024vr6"/> Volkswagen also produced a five-cylinder [[VR5 engine]] based on the VR6.
[[Volkswagen Group]] introduced the first VR6 engine in 1991 and VR6 engines remained in production until late 2024.<ref name="2024vr6"/> Volkswagen also produced a five-cylinder [[VR5 engine]] based on the VR6.


== Description ==
== Description ==
[[File:Kleppen_VR6-motor_12V-contrast.PNG|thumb|right|Diagram showing the differences in port lengths between a V6 and VR6]]
[[File:Kleppen VR6-motor 24V-contrast.PNG|alt=(Credits to @Toffguy)|thumb|288x288px|24Valve VR6|left]]
[[File:Kleppen_VR6-motor_12V-contrast.PNG|thumb|Diagram showing the differences in port lengths between a V6 and VR6|266x266px]]
VR6 engines share a common [[cylinder head]] for the two banks of cylinders. Only two [[camshaft]]s are needed for the [[engine]], regardless of whether the engine has two or [[Multi-valve|four valves]] per cylinder. This simplifies engine construction and reduces costs.
VR6 engines share a common [[cylinder head]] for the two banks of cylinders. Only two [[camshaft]]s are needed for the [[engine]], regardless of whether the engine has two or [[Multi-valve|four valves]] per cylinder. This simplifies engine construction and reduces costs.
 
[[File:Klepbediening VR6 24V.PNG|alt=(Credits to @Toffguy)|thumb|VR Engine Cross section|206x206px]]
Since the cylinders are not located on the centreline of the combined cylinder head, the lengths of the [[intake]] and exhaust ports are different for each bank. Without compensation, these varying port lengths would result in the two banks of cylinders producing different amounts of power at a particular engine RPM. The difference in port lengths are compensated for with the length of the runners in the [[intake manifold]], the camshaft overlap and lift profile, or a combination thereof.{{citation needed|date=November 2019}}
Since the cylinders are not located on the centreline of the combined cylinder head, the lengths of the [[intake]] and exhaust ports are different for each bank. Without compensation, these varying port lengths would result in the two banks of cylinders producing different amounts of power at a particular engine RPM. The difference in port lengths are compensated for with the length of the runners in the [[intake manifold]], the camshaft overlap and lift profile, or a combination thereof.{{citation needed|date=November 2019}}
{{clear right}}
{{clear right}}
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In 1997, the [[VR5 engine]] was introduced, based on the VR6 engine.
In 1997, the [[VR5 engine]] was introduced, based on the VR6 engine.


An [[List of discontinued Volkswagen Group petrol engines#2.8 VR6 24v 147-150kW|AQP/AUE version]] with four valves per cylinder was introduced in 2000. This {{convert|2.8|L|cuin|0|abbr=on}} engine produced {{convert|150|kW|hp|0|abbr=on}}, and mostly replaced the two-valve engines, except for in North America where an updated version of the two-valve engine was used in the Golf and Jetta from 2000 to 2002.
An [[List of discontinued Volkswagen Group petrol engines#2.8 VR6 24v 147-150kW|AQP/AUE version]] with four valves per cylinder was introduced in 2000. This {{convert|2.8|L|cuin|0|abbr=on}} engine produced {{convert|150|kW|hp|0|abbr=on}}, and mostly replaced the two-valve engines, except for in North America where an updated version of the two-valve engine was used in the Golf and Jetta from 2000 to 2002. From 2003 to 2005 the 2.8 L four valves per cylinder engine was used in specific Golf and Jetta models.<ref>{{Cite web |last=M |first=Eric |date=April 25, 2019 |title=VR & W Engines - Explained! |url=https://www.gtmotorsports.org/vr-w-engines-explained/ |access-date=August 14, 2025 |website=Gran Touring Motorsports}}</ref>


A {{convert|3.2|L|cuin|0|abbr=on}} [[List of Volkswagen Group petrol engines#3.2 VR6 24v (EA390)|EA390 version]] of the 4 valve engine was introduced in the 2001 [[Volkswagen New Beetle]] ''RSi'' model. Versions of this 3.2 litre engine were also used in the 2002–2004 [[Volkswagen Golf Mk4]] ''R32'' model, the 2003-2010 [[Audi TT]] ''3.2 VR6 quattro'' models and the 2003-2009 [[Audi A3 8P]] ''3.2 VR6 Quattro''(US Models). Peak power output was {{convert|165|kW|hp|0|abbr=on}} in the New Beetle (engine code AXJ), {{convert|177|kW|hp|0|abbr=on}} in the New Beetle and Golf (engine code BFH/BJS), and {{convert|184|kW|hp|0|abbr=on}} in the Audi TT(engine code BHE) and Audi A3 8P(engine code BDB / BMJ / BUB).
A {{convert|3.2|L|cuin|0|abbr=on}} [[List of Volkswagen Group petrol engines#3.2 VR6 24v (EA390)|EA390 version]] of the 4 valve engine was introduced in the 2001 [[Volkswagen New Beetle]] ''RSi'' model. Versions of this 3.2 litre engine were also used in the 2002–2004 [[Volkswagen Golf Mk4]] ''R32'' model, the 2003-2010 [[Audi TT]] ''3.2 VR6 quattro'' models and the 2003-2009 [[Audi A3 8P]] ''3.2 VR6 Quattro''(US Models). Peak power output was {{convert|165|kW|hp|0|abbr=on}} in the New Beetle (engine code AXJ), {{convert|177|kW|hp|0|abbr=on}} in the New Beetle and Golf (engine code BFH/BJS), and {{convert|184|kW|hp|0|abbr=on}} in the Audi TT(engine code BHE) and Audi A3 8P(engine code BDB / BMJ / BUB).


The engine size was again increased in 2005, when a {{convert|3.6|L|cuin|0|abbr=on}} version with [[gasoline direct injection]] (FSI) was introduced in the [[Volkswagen Passat (B6)]]. This [[list of Volkswagen Group petrol engines#3.6 VR6 FSI 206kW|BLV version]] uses a narrower 10.6&nbsp;degree angle between the cylinder banks and produces {{convert|206|kW|hp|0|abbr=on}}. A {{convert|3.2|L|cuin|0|abbr=on}} [[list of Volkswagen Group petrol engines#3.2 VR6 FSI 184kW|AXZ version]] producing {{convert|184|kW|hp|0|abbr=on}} was introduced in 2006.<ref>{{cite web|title=The Passat (sales brochure){{dash}}3.2 FSI VR6|url=http://cdn.volkswagen.co.uk/assets/common/pdf/brochures/passat-saloon-brochure.pdf|work=Volkswagen Group United Kingdom Limited|publisher=Volkswagen.co.uk|pages=14, 18, 24|date=1 December 2008|access-date=31 July 2009}}</ref> In 2008, an uprated ''BWS'' version of the 3.6 litre engine producing {{convert|220|kW|hp|0|abbr=on}} was introduced in the [[Volkswagen Passat (B6)]] ''R36'' model.<ref>{{cite web|title=The Passat (sales brochure){{dash}}3.6 FSI VR6|url=http://cdn.volkswagen.co.uk/assets/common/pdf/brochures/passat-saloon-brochure.pdf|work=Volkswagen Group United Kingdom Limited|publisher=Volkswagen.co.uk|pages=11, 12, 14, 19, 24|date=1 December 2008|access-date=31 July 2009}}</ref>
The engine size was again increased in 2005, when a {{convert|3.6|L|cuin|0|abbr=on}} version with [[gasoline direct injection]] (FSI) was introduced in the [[Volkswagen Passat (B6)]]. This [[list of Volkswagen Group petrol engines#3.6 VR6 FSI 206kW|BLV version]] uses a narrower 10.6&nbsp;degree angle between the cylinder banks and produces {{convert|206|kW|hp|0|abbr=on}}. A {{convert|3.2|L|cuin|0|abbr=on}} [[list of Volkswagen Group petrol engines#3.2 VR6 FSI 184kW|AXZ version]] producing {{convert|184|kW|hp|0|abbr=on}} was introduced in 2006.<ref>{{cite web|title=The Passat (sales brochure){{dash}}3.2 FSI VR6|url=http://cdn.volkswagen.co.uk/assets/common/pdf/brochures/passat-saloon-brochure.pdf|work=Volkswagen Group United Kingdom Limited|publisher=Volkswagen.co.uk|pages=14, 18, 24|date=1 December 2008|access-date=31 July 2009|archive-date=15 February 2010|archive-url=https://web.archive.org/web/20100215123508/http://cdn.volkswagen.co.uk/assets/common/pdf/brochures/passat-saloon-brochure.pdf|url-status=dead}}</ref> In 2008, an uprated ''BWS'' version of the 3.6 litre engine producing {{convert|220|kW|hp|0|abbr=on}} was introduced in the [[Volkswagen Passat (B6)]] ''R36'' model.<ref>{{cite web|title=The Passat (sales brochure){{dash}}3.6 FSI VR6|url=http://cdn.volkswagen.co.uk/assets/common/pdf/brochures/passat-saloon-brochure.pdf|work=Volkswagen Group United Kingdom Limited|publisher=Volkswagen.co.uk|pages=11, 12, 14, 19, 24|date=1 December 2008|access-date=31 July 2009|archive-date=15 February 2010|archive-url=https://web.archive.org/web/20100215123508/http://cdn.volkswagen.co.uk/assets/common/pdf/brochures/passat-saloon-brochure.pdf|url-status=dead}}</ref>


The base model [[Porsche Cayenne#First generation (E1 9PA; 2002)|Porsche Cayenne (9PA)]] used 3.2-liter VR6 engine from 2003 to 2006 and then a 3.6-litre VR6 engine from 2008 to 2010. Then the next generation [[Porsche Cayenne#Second generation (E2 92A; 2010)|Porsche Cayenne (92A)]] also used a 3.6-litre VR6 engine from 2010 to 2018.
The base model [[Porsche Cayenne#First generation (E1 9PA; 2002)|Porsche Cayenne (9PA)]] used the 3.2-liter VR6 engine from 2003 to 2006 and then a 3.6-litre VR6 engine from 2008 to 2010. Then the next generation [[Porsche Cayenne#Second generation (E2 92A; 2010)|Porsche Cayenne (92A)]] also used a 3.6-litre VR6 engine from 2010 to 2018.


Volkswagen had started to phase out VR engines in favour of downsized turbocharged four cylinder engines. In 2017, the VR6 engines made an unexpected comeback, with versions of the 24-valve VR6 engines being produced for the [[Volkswagen Atlas]]. Volkswagen also made a new VR6 (still EA390) for the Chinese market only, its 2.5-litre turbocharged 24-valve VR6 producing {{convert|220|kW|hp|0|abbr=on}} and 500&nbsp;N⋅m of torque, for the [[Volkswagen Teramont]] SUV and [[Volkswagen Talagon]] MPV.
Volkswagen had started to phase out VR engines in favour of downsized turbocharged four cylinder engines. The VR6 was discontinued from the Volkswagen Passat NMS by 2019 leaving the [[Volkswagen Atlas]] as the only model with this engine at the time. The VR6 was eventually discontinued from most markets when the Volkswagen Atlas dropped the engine as an option since 2023.
 
Volkswagen never entirely abandoned the platform and designed a new VR6 (still EA390) for the Chinese market only, [[List of Volkswagen Group petrol engines#EA390 VR6|a 2.5-litre turbocharged 24-valve VR6]] producing {{convert|220|kW|hp|0|abbr=on}} and 500&nbsp;N⋅m of torque, for the [[Volkswagen Teramont]] SUV and [[Volkswagen Talagon]] MPV. The engine has been available since the Teramont debuted in 2017 and were built in Germany and shipped to China and comply with their unique tax and emissions regulations.


==Applications==
==Applications==
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* 2008–2015 [[Audi Q7#First generation (Typ 4L; 2005)|Audi Q7 (4L)]]
* 2008–2015 [[Audi Q7#First generation (Typ 4L; 2005)|Audi Q7 (4L)]]
* 2011–2018 [[Volkswagen Passat NMS]]
* 2011–2018 [[Volkswagen Passat NMS]]
* 2017–2024 [[Volkswagen Atlas|Volkswagen Atlas/Teramont]]
* 2017–2024 [[Volkswagen Atlas]]
* 2017–2024 [[Volkswagen Atlas|Volkswagen Teramont]]
* 2021–2024 [[Volkswagen Talagon]]
* 2021–2024 [[Volkswagen Talagon]]
* 2022–2024 [[Audi Q6]]
* 2022–2024 [[Audi Q6]]
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=== W engines ===
=== W engines ===
{{main|W engine}}
{{main|W engine}}
Volkswagen Group has produced several W engines based on combining two VR engines on a common crankshaft. The first W engine to reach production was the [[Volkswagen Group W-12 engine|W12 engine]] which has been produced since 2001. The W12 engine can be thought of as two VR6 engines an angle of 72&nbsp;degrees. Although Volkswagen has not produced a VR4 engine, it produced a [[W8 engine]] from 2001 to 2004, which can be thought of as two VR4 engines on a common crankshaft.
Volkswagen Group has produced several W engines based on combining two VR engines on a common crankshaft. The first W engine to reach production was the [[Volkswagen Group W-12 engine|W12 engine]] which has been produced since 2001. The W12 engine can be thought of as two VR6 engines an angle of 72&nbsp;degrees. Although Volkswagen has not produced a VR4 engine, it produced a [[W8 engine]] from 2001 to 2004, which can be thought of as two VR4 engines on a common crankshaft.



Latest revision as of 04:45, 24 November 2025

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The VR6 engine is a six-cylinder engine configuration developed by Volkswagen. The name VR6 comes from the combination of German words “verkürzt” and “Reihenmotor” meaning "Shortened" and “inline engine” respectively. It was developed specifically for transverse engine installations and front-wheel drive (FWD) vehicles. The VR6 is a highly compact engine, due to the narrower angle of 10.5 to 15 degrees between cylinder banks, as opposed to the traditional V6 angles ranging from 45 to 90 degrees. The compact design is cheaper to manufacture, since only one cylinder head is required for all six cylinders, much like a traditional inline-6 engine.

Volkswagen Group introduced the first VR6 engine in 1991 and VR6 engines remained in production until late 2024.[1] Volkswagen also produced a five-cylinder VR5 engine based on the VR6.

Description

(Credits to @Toffguy)
24Valve VR6
File:Kleppen VR6-motor 12V-contrast.PNG
Diagram showing the differences in port lengths between a V6 and VR6

VR6 engines share a common cylinder head for the two banks of cylinders. Only two camshafts are needed for the engine, regardless of whether the engine has two or four valves per cylinder. This simplifies engine construction and reduces costs.

(Credits to @Toffguy)
VR Engine Cross section

Since the cylinders are not located on the centreline of the combined cylinder head, the lengths of the intake and exhaust ports are different for each bank. Without compensation, these varying port lengths would result in the two banks of cylinders producing different amounts of power at a particular engine RPM. The difference in port lengths are compensated for with the length of the runners in the intake manifold, the camshaft overlap and lift profile, or a combination thereof.Script error: No such module "Unsubst".

Volkswagen engines

Script error: No such module "Multiple image". The Volkswagen VR6 engine was designed for transverse engine installations in front-wheel drive vehicles.[2] The narrow angle of 15° between the two cylinder banks reduced the width of the engine, compared to a traditional V6 engine. Therefore, the VR6 engine is easier to fit within an engine bay that was originally designed for a four-cylinder engine.Script error: No such module "Unsubst".

12-valve versions

Early VR6 engines had two valves per cylinder (for a total of twelve valves) and used one camshaft for the intake and exhaust valves of each cylinder bank (without the use of rockers).

The first Volkswagen VR6 engine uses the AAA version. It had a bore of Script error: No such module "convert". and a stroke of Script error: No such module "convert"., for a total displacement of Script error: No such module "convert".. In 1994, a Script error: No such module "convert". ABV version was introduced in some European countries, with an increased bore of Script error: No such module "convert"..

The V angle between the cylinder banks is 15°, and the compression ratio is 10:1.[3] The crankshaft runs in seven main bearings and the journals are offset 22° to one another, in order to accommodate the offset cylinder placement.[4] This also allows the use of a 120° firing interval between cylinders.[5] The firing order is: 1, 5, 3, 6, 2, 4.[6] The centerlines of the cylinders are offset from the centerline of the crankshaft by Script error: No such module "convert"..

The valve sizes are Script error: No such module "convert". for the intake and Script error: No such module "convert". for the exhaust. Since the two rows of pistons and cylinders share a single cylinder head and head gasket, the piston crown (or top surface) is tilted. The engine management system is Bosch Motronic.

24-valve versions

A version with four valves per cylinder (for a total of 24 valves) was introduced in 1999.[7] The 24-valve versions use one camshaft for the intake valves of both banks (using rockers to reach the furthest bank) and the other camshaft for the exhaust valves of both banks (again, through the use of rockers).[8] This operating principle is more akin to a double overhead camshaft (DOHC) design, with one camshaft for intake valves, and one for exhaust valves.

History

The 1922–1976 Lancia V4 engine and 1922–1939 Lancia V8 engine were the first narrow angle V engines to be used in a motor vehicle.[9][10]

The first versions of the VR6 engine were introduced in the 1991 Volkswagen Passat B3 sedan and Volkswagen Corrado coupe.[11] A Script error: No such module "convert". AAA version producing Script error: No such module "convert". was used in most Passat models and in the North American version of the Corrado. A Script error: No such module "convert". ABV version producing Script error: No such module "convert". was used in the Passat Syncro model and the European version of the Corrado. Both versions used two valves per cylinder. Usage of the VR6 engine spread to the Volkswagen Golf Mk3 2.8 VR6 and Volkswagen Vento/Jetta (A3), 2.8 VR6 models in 1992, and high specification versions of the Sharan/Galaxy/Alhambra MPVs. The 2.8 litre version was also used in the 1996–2003 Mercedes-Benz Vito (W638) commercial vans, where it was designated M104.900.

In 1997, the VR5 engine was introduced, based on the VR6 engine.

An AQP/AUE version with four valves per cylinder was introduced in 2000. This Script error: No such module "convert". engine produced Script error: No such module "convert"., and mostly replaced the two-valve engines, except for in North America where an updated version of the two-valve engine was used in the Golf and Jetta from 2000 to 2002. From 2003 to 2005 the 2.8 L four valves per cylinder engine was used in specific Golf and Jetta models.[12]

A Script error: No such module "convert". EA390 version of the 4 valve engine was introduced in the 2001 Volkswagen New Beetle RSi model. Versions of this 3.2 litre engine were also used in the 2002–2004 Volkswagen Golf Mk4 R32 model, the 2003-2010 Audi TT 3.2 VR6 quattro models and the 2003-2009 Audi A3 8P 3.2 VR6 Quattro(US Models). Peak power output was Script error: No such module "convert". in the New Beetle (engine code AXJ), Script error: No such module "convert". in the New Beetle and Golf (engine code BFH/BJS), and Script error: No such module "convert". in the Audi TT(engine code BHE) and Audi A3 8P(engine code BDB / BMJ / BUB).

The engine size was again increased in 2005, when a Script error: No such module "convert". version with gasoline direct injection (FSI) was introduced in the Volkswagen Passat (B6). This BLV version uses a narrower 10.6 degree angle between the cylinder banks and produces Script error: No such module "convert".. A Script error: No such module "convert". AXZ version producing Script error: No such module "convert". was introduced in 2006.[13] In 2008, an uprated BWS version of the 3.6 litre engine producing Script error: No such module "convert". was introduced in the Volkswagen Passat (B6) R36 model.[14]

The base model Porsche Cayenne (9PA) used the 3.2-liter VR6 engine from 2003 to 2006 and then a 3.6-litre VR6 engine from 2008 to 2010. Then the next generation Porsche Cayenne (92A) also used a 3.6-litre VR6 engine from 2010 to 2018.

Volkswagen had started to phase out VR engines in favour of downsized turbocharged four cylinder engines. The VR6 was discontinued from the Volkswagen Passat NMS by 2019 leaving the Volkswagen Atlas as the only model with this engine at the time. The VR6 was eventually discontinued from most markets when the Volkswagen Atlas dropped the engine as an option since 2023.

Volkswagen never entirely abandoned the platform and designed a new VR6 (still EA390) for the Chinese market only, a 2.5-litre turbocharged 24-valve VR6 producing Script error: No such module "convert". and 500 N⋅m of torque, for the Volkswagen Teramont SUV and Volkswagen Talagon MPV. The engine has been available since the Teramont debuted in 2017 and were built in Germany and shipped to China and comply with their unique tax and emissions regulations.

Applications

Volkswagen Group automobiles:

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Other manufacturers:

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W engines

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Volkswagen Group has produced several W engines based on combining two VR engines on a common crankshaft. The first W engine to reach production was the W12 engine which has been produced since 2001. The W12 engine can be thought of as two VR6 engines an angle of 72 degrees. Although Volkswagen has not produced a VR4 engine, it produced a W8 engine from 2001 to 2004, which can be thought of as two VR4 engines on a common crankshaft.

The largest Volkswagen W engine is the W16 engine introduced on the Bugatti Veyron in 2005. This engine can be thought of as two VR8 engines at an angle of 90 degrees. It additionally has four turbochargers.

Other manufacturers

Motorcycle manufacturer Horex has produced VR6 engines since 2012.[17][18]

References

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