Holden To Introduce Active Fuel Management In 2009

Steane Klose | Oct 21, 2008

January 2009 will see the roll-out of Active Fuel Management (AFM) technology in all Holden V8 automatic vehicles as part of Holden's recently announced EcoLine range. Known as Displacement on Demand in the states, AFM has been around for some time now but the release will mark 'a first' for a local manufacturer.

Depending on driving conditions, AFM will allow Holden's big V8 to cut back to as few as four-cylinders when driving. In a combined city/highway cycle, AFM can conserve around one litre of fuel per hundred kilometers, while the savings are greater again for long distance highway driving.

AFM works by closing the intake and exhaust valves on up to four-cylinders under certain driving conditions. Vehicle speed and torque delivery are maintained by utilising the engine's electronic throttle control to increase cylinder pressure in V4 mode. When conditions change and more power and torque are required - like when overtaking, accelerating or the road climbs - the fuel delivery is seamlessly returned to the de-activated cylinders and normal operation continues.

GM Holden Chairman and Managing Director, Mark Reuss explained how beneficial AFM technology will be both to GM Holden and customers alike:

"AFM delivers the best of both worlds to performance enthusiasts - improved fuel efficiency with the power they want in a V8. For customers looking for V8 performance, AFM makes Holden the smart choice," he said.

While a Holden V8 with AFM technology will still use more fuel than some of the miserly econo-boxes available today, the technology will be welcomed by car and environmental enthusiasts alike. AFM has been a long time coming to Australia. It's great to see Holden taking initiatives that are good for the environment and also friendly to V8 lovers.

Filed under: Holden, Latest News, GM, afm, holden afm, gm holden, News, active fuel management

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  • Cupid Stunt says,
    6 years ago
    1 like
    Doesn't this really mean a V8 is too big for general use and you should be drving a 4 cyl car of about 2 litres anyway. Why have the expense of 8 when you only need four. Yeh I know the performance nobs will only say that you REALLY need the extra horses on occasions.
    • Sheila says,
      18 hours ago
      clearly you have never had a v8 baby
  • Tony D says,
    6 years ago
    1 like
    Funny, when the VE came out, Holden said nobody would give a toss about displacement on demand and it wasn't worth the effort...
    • Donella says,
      5 years ago
      We are looking at buying a 2009 SS would u buy one???
      We are a bit unsure on the AFM!!!
      Cheers!
  • Donella says,
    5 years ago
    1 like
    Can anyone tell me if the AFM can be switched off manually by the driver?
  • Jarryd says,
    4 years ago
    Um, yeah..the active fuel management only comes in the automatic SS's and Calais's.

    real enthusiasts buy manual v8's.
  • James. D says,
    2 years ago
    Hi, which engine capacity v8 has afm, eg: 6.0l or/and 6.2l

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