A "vented bonnet" refers to a car hood or engine cover that has special openings or holes designed to allow air to flow through. These openings help to release heat and improve the overall cooling of the engine. Full definition
Outside, there's tweaked styling and aerodynamics with a heavily vented bonnet, composite side skirts and a restyled rear bumper and carbonfibre diffuser. (evo.co.uk)
Packing 581bhp under its new vented bonnet, the Maserati Levante Trofeo finally brings the Italian brand's SUV the power it deserves (evo.co.uk)
The Gold special edition was available in the UK in 1981 as the first 900 4 - door saloons, these had Turbo Spec Velour Interior finished in either Blue or Black with Gold pin stripes, twin air vent bonnet and fuel gauge showing tank contents in Litres. (en.wikipedia.org)