What engine is in the 2019 Lexus NX 300h?
The 2019 Lexus NX 300h is powered by a hybrid powertrain that pairs a 2.5-liter inline-4 Atkinson-cycle gasoline engine with an electric motor, delivering a combined 194 horsepower. The system uses Lexus' Hybrid Drive with a CVT, and it is available in front-wheel drive or all-wheel drive.
Powertrain overview
Below are the core components that make up the NX 300h’s hybrid propulsion system.
- 2.5-liter inline-4 Atkinson-cycle gasoline engine (engine code 2AR-FXE)
- Electric motor/generator that provides propulsion and assists the gasoline engine
- Nickel-metal hydride (NiMH) battery pack powering the electric motor
- Electronically controlled continuously variable transmission (ECVT)
- Drivetrain options: front-wheel drive (FWD) or all-wheel drive (AWD)
- Combined system output: 194 horsepower
These elements work together to balance everyday practicality with improved fuel efficiency, delivering smooth transitions between gasoline and electric power.
Why this configuration matters
The NX 300h’s Atkinson-cycle engine is designed to maximize efficiency rather than outright power. Coupled with an electric motor and regenerative braking, the system prioritizes economical daily driving while still offering adequate responsiveness for typical road use. The availability of AWD on certain trims helps with traction in varied conditions, though it can slightly affect fuel economy relative to the FWD setup.
Performance and efficiency context
As a compact luxury hybrid, the NX 300h emphasizes steady, efficient performance over sporty acceleration. The hybrid powertrain provides quiet operation and a seamless blend of gas and electric power, with EPA-style efficiency typically falling in the low- to mid-30s mpg range depending on drive configuration and conditions. Exact numbers vary by model year, tires, and drivetrain (FWD vs. AWD).
Summary
In the 2019 NX 300h, Lexus blends a 2.5-liter Atkinson-cycle four-cylinder engine with an electric motor to create a 194-horsepower hybrid system. Paired with an ECVT and offered in FWD or AWD, this setup prioritizes efficiency and smooth daily usability while maintaining familiar Lexus refinement.
What engine does the Lexus Nx 300h have?
2.5-liter 2AR-FXE engine
The NX 300h is powered by a 2.5-liter 2AR-FXE engine mated to an electric motor and CVT that puts out a combined power output of 145 kW (194 hp; 197 PS).
Is the Lexus NX engine the same as the RAV4?
Both the RAV4 and the NX 350h use a version of Toyota's well-known hybrid system, which is based around a 2.5-liter four-cylinder engine. Output numbers differ, however, with the Toyota generating a system total of 219 horsepower and the Lexus outdoing it by 21 hp, for a total of 240 horsepower.
What are common problems with the 2019 Nx 300?
Owner Reported Trouble Spots
- In-car Electronics. Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
- Engine Major.
- Exhaust.
- Body Hardware.
- Climate System.
- Drive System.
- Brakes.
- Suspension/Steering.
What engine is in the 2019 Lexus NX hybrid?
2.5-liter four-cylinder engine
The 2019 Lexus NX Hybrid model comes with a 2.5-liter four-cylinder engine and electric motors, for a combined output of 194 horsepower. The 2024 Lexus NX Hybrid comes with a 2.5-liter four-cylinder engine with Lexus Hybrid Electric Drive, and it produces a combined 240 horsepower.
