2019 Infiniti Q50 3.0t VR30DDTT Twin Turbo V6 Engine | 300HP RWD/AWD

This 2019 Infiniti Q50 3.0T is powered by Nissan’s VR30DDTT 3.0 liter twin-turbocharged V6, an all-aluminum direct-injection engine built for strong performance and modern efficiency, producing 300 horsepower at 6400 RPM and 295 lb-ft of torque from 1600 to 5200 RPM in the standard 3.0t trim while the Red Sport 400 version uses higher boost and optical turbo speed sensors to deliver 400 horsepower at 6400 RPM and 350 lb-ft of torque from 1600 to 5200 RPM. The VR30DDTT uses a 86.0 mm bore and 86.0 mm stroke for a square configuration, 10.3:1 compression ratio, and dual overhead cams with continuously variable valve timing control on both intake and exhaust sides to optimize power delivery and fuel economy across the rev range. Fueling is handled by a direct injection system running at over 2900 psi through high pressure injectors, paired with an electronic drive-by-wire throttle body and integrated water-cooled intercoolers mounted inside the intake manifold to reduce charge air temps and minimize turbo lag. The twin turbochargers are compact mono-scroll units integrated into the exhaust manifolds for faster spool, with electronic wastegate actuators for precise boost control, and the engine features a water-cooled air system plus an auxiliary electric water pump that circulates coolant through the turbos after shutdown to improve durability. Internal highlights include a forged steel crankshaft, forged connecting rods, and a plasma-sprayed mirror bore coating on the cylinder walls instead of traditional iron liners to reduce weight, improve heat transfer, and lower friction, all contributing to the engine’s 429 pound dry weight. Oil capacity is approximately 5.4 quarts with filter using 0W-20 synthetic, and the cooling system is designed for high thermal loads with a high-capacity radiator and dedicated oil cooler on Red Sport models. The engine is paired to a Jatco 7-speed automatic transmission with manual shift mode and downshift rev matching, available in rear-wheel drive or INFINITI’s Intelligent All-Wheel Drive, and it requires 91 octane premium fuel for rated output. Emissions equipment includes dual primary catalytic converters close-coupled to the turbos plus secondary converters downstream, meeting LEV III and ULEV70 standards. This powertrain gives the 2019 Q50 3.0t a 0 to 60 mph time of around 5.0 seconds and the Red Sport 400 approximately 4.5 seconds, while still returning an EPA estimated 20 MPG city and 29 MPG highway for RWD models, making the VR30DDTT one of the most advanced and tunable six-cylinder engines in the luxury sport sedan segment.