Ridgeline’s powerplant makes a large contribution to the vehicle’s fuel efficiency while helping to provide highly satisfying acceleration and pulling power.
Ridgeline is powered by a direct-injection V-6—a 3.5-liter, aluminum-alloy, single-overhead camshaft, 24-valve i-VTEC engine featuring Honda’s advanced Variable Cylinder Management™ (VCM®) system.
Horsepower is rated at 280 @ 6000 rpm (SAE net), and torque is an impressive 262 lb-ft @ 4700 rpm (SAE net).
Numerous friction-reduction techniques, chassis and aerodynamic features, and a highly efficient 9-speed automatic transmission help the Ridgeline receive excellent EPA fuel-economy ratings36
Direct injection enhances both efficiency and power output by delivering the fuel mixture right where it’s used—and by cooling the piston crown so a higher compression ratio can be employed.
The engine’s 60-degree V-angle helps minimize vibration, while its aluminum-alloy cylinder block and heads save weight, which improves both acceleration and fuel efficiency.
By using a single overhead camshaft in each cylinder head and a serpentine accessory drive belt, the engine is made more compact, leaving more room for other components.
Additional packaging efficiency is realized by incorporating the exhaust manifold into the cylinder-head casting, and the use of close-coupled exhaust catalysts just downstream from each exhaust manifold.
To save fuel, an idle-stop system automatically shuts off the engine when the vehicle brakes to a stop for at least two seconds—then restarts the engine when the brake pedal is released. The system may be switched off with a button located behind the shift-by-wire control unit.