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Holden engineering lighter and more fuel-efficient RWD Zeta platform

 

GM’s RWD Zeta platform currently underpins cars like the Holden Commodore/Pontiac G8 and Chevrolet Camaro

GM’s RWD Zeta platform currently underpins cars like the Holden Commodore/Pontiac G8 and Chevrolet Camaro

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General Motors’ RWD Zeta platform was pioneered in Australia for the locally built Holden Commodore sedan but right from the start Detroit had global intentions for the design. Today, Zeta running gear can be found in models sold in China, South Korea, the UK, and in North America, but GM has much more ambitious plans for the platform, going right up until 2020.

Back in March we reported that the platform would be modified to be smaller and more fuel-efficient, and that the first car to ride on this ‘Zeta II’ design would be the next-generation Holden Commodore due in 2013. A new report published by GoAuto confirms that Holden is developing a lighter and more highly-evolved version of the three-year old Zeta platform.

Holden insiders have revealed that cutting weight is one of the primary goals for engineers, but also to eventually use Zeta for medium RWD cars as well as large ones. One key element will be the increased use of lighter materials in its construction, including the possibility of advanced composites. Other issues affecting the design process include the use of more fuel-efficient powertrains, such as diesel and hybrid options, as well as increased global production.

Some of the recipients for the updated platform include Cadillac and Chevrolet in the U.S., Buick in China, and Holden in Australia. One thing is for certain, GM will keep its premium Sigma RWD platform, currently used by Cadillac, as well as the relatively low-cost Zeta for its future models.

Where this leaves rumored development plans for a smaller ‘Alpha’ RWD platform and a premium Cadillac architecture is anyone’s guess, however, given GM’s financial woes it’s unlikely that such an expensive undertaking is high on the company’s priorities.

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Comments (5)
  1. That's great that the outstanding and respected Zeta will remain, but, I hope it's not reduced size-wise; lightening with different and more advanced materials, I could understand. Perhaps two different sized could be offered, a mid-sized version which would translate to vehicles around 190-195" in length and a larger/stretched version to 5-meter (197") through some 205" for premium models.

    At least Sigma is remaining and will co-exist with this. The Sigma will be for the Cadillac CTS, and could even be stretched for the next-generation, and a FWD-bias Epsilon-2 (which I understand has been approved for Cadillac) for a successor of sorts to the DTS.
     
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  2. I hope Caddy ditches it epsilon II platform for its sub CTS model and capitalizes on these developments down under.
     
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  3. I hope Caddy ditches it epsilon II platform for its sub CTS model and capitalizes on these developments down under.

    I second that
     
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  4. I hope Caddy ditches it epsilon II platform for its sub CTS model and capitalizes on these developments down under.

    I second that

    I third that

    I would to see a good 3 series competitor from Cadillac.
     
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  5. this is a masterpiece i m really not looking forward to the next two decades of vehicles to come (if they are like the prius, i would rather go back to riding horses thank you, or public transport which ever is convenient.) cars made for enthusiasts will be priced like the Lamborghini Reventon or the Austin martin 1-77, in other words out of our reach. it seems that we will have to go back and bring back the old legends from the grave 1977 Trans-Am or 1969 Camaro SS 427 anyone?
     
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