The 2018 Chevrolet Tahoe is big on convenience, comfort, space, off-road prowess, safety and all-around ruggedness. However, for a full-size SUV that can comfortably ferry up to nine passengers, the 2018 Tahoe is also surprisingly big on fuel efficiency. A highway fuel consumption of 10.3 Km/L is virtually unprecedented in the segment, especially for a 4x4 that is powered by a potent 5.3-litre V8 delivering a substantial 355 horsepower and 520Nm of torque.
So how did Chevrolet engineers manage to make this large SUV, with awe-inspiring performance and towing capability so frugal? The answer lies in the ingenious technological solutions the development team have deployed.
To make the V8 as efficient as possible, Chevrolet engineers added a trio of Active Fuel Management technologies that work in perfect harmony to cut fuel consumption without adversely affecting performance. While Direct Fuel Injection meters the optimum amount of petrol for efficient combustion, Variable Valve timing technology allows for continuous control of valve opening and closing. This enables better engine breathing, while reducing fuel consumption and emissions. The highlight though is General Motors’ intelligent cylinder deactivation technology. This flagship technology, allows four cylinders to be shut off when operating under lighter loads. In essence, the V8 can also act as a four-cylinder! For instance, during a highway cruise when the power from all eight cylinders isn’t required, the system can deactivate four cylinders to reduce fuel consumption. However, when extra power is called upon, say for an overtaking maneuver, all eight cylinder awaken to provide the propulsion required.
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