Audi introduces new A4 Avant g-tron; Audi e-gas offered as standard
Green Car Congress
MARCH 7, 2017
Audi installs the four cylindrical CNG tanks as a compact module in the rear end of the Avant. The second layer, a composite winding of carbon fiber-reinforced polymer (CFRP) and glass fiber-reinforced polymer (GFRP), provides for maximum strength. Their inner layer is a gas-tight matrix of polyamide.
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