Editing Straight-six engine (section)

===Australia===
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 | caption1  = 1970 [[Chrysler Hemi-6 Engine]]
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 | caption2  = 2004–2009 [[Ford Barra engine]]
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From the 1950s to the 2010s, many cars produced in Australia were powered by a straight-six engine.

Holden's first car, the 1948 [[Holden 48-215]] sedan, was powered by the [[Holden straight-six motor#Grey|Holden 'grey' motor]], an overhead valve petrol engine. This engine was replaced by the [[Holden straight-six motor#Red|Holden 'red' motor]], which was produced from 1963 to 1980 and in turn followed by the 1980–1984 [[Holden straight-six motor#Blue|Holden 'blue' motor]]. The final locally produced Holden straight-six was the 1984–1986 [[Holden straight-six motor#Black|Holden 'black' motor]], which was initially replaced by the Japanese-built [[Nissan RB engine#RB30|Nissan RB30]] engine before Holden switched to a locally-built V6 engine.

Ford produced straight-six engines for the longest time of any Australian manufacturer. In 1960, the [[Ford Falcon (Australia)|Ford Falcon]] large sedan was introduced with a locally-built version of the American [[Ford straight-six engine#Ford Australia|Ford Straight-6]] overhead valve engine. In 1998, these engines were upgraded to a single overhead camshaft design. This was followed in 2002 by the [[Ford Barra engine|Ford Barra]] dual overhead camshaft engine in 2002, which was produced in both naturally aspirated and turbocharged versions. The Ford Barra engine remained in use until Ford Australia ceased local production in 2016.

The [[Chrysler Valiant]] was introduced in 1962, powered by the American [[Chrysler Slant 6 engine|Chrysler Slant 6]]. In 1970, the Valiant switched to the [[Chrysler Hemi-6 Engine|Chrysler Hemi-6]] overhead valve engine, an Australia-only engine that was produced until Chrysler Australia ceased production of large cars in 1981.<ref>{{cite web |author=''Wheels'' staff |title=Australia's top 10 engines |url= https://www.whichcar.com.au/features/australias-top-10-engines |publisher=whichcar Australia |date=26 January 2017 |access-date=8 October 2019}}</ref>

The 1962–1965 [[Austin Freeway]] and [[Wolseley 24/80]] large sedans were powered by BMC Australia's ''Blue Streak'' overhead valve petrol engine. This was followed by the six-cylinder versions of the [[BMC E-series engine|BMC E-series]] overhead camshaft engines, which were introduced in the 1970 [[Austin Kimberley|Austin Kimberley / Austin Tasman]] front-wheel-drive sedans, which were produced until 1972.<ref>{{cite book |last=Davis |first=Tony |year=1987 |title=Aussie Cars |publisher=Marque Publishing |isbn=9780947079017 }}</ref> This engine was upsized to a 2.6&nbsp;L displacement in 1973 and used [[Leyland P76]] and the [[Morris Marina]] large cars until 1975.<ref>{{cite book|last=Robson |first=Graham |year=2000 |edition=2nd |title=The Cars of BMC |publisher=Motorbooks International |isbn=9781899870417 }}</ref>