Buick Regal 2018-present 2.0L Engine Specifications

The 2.0L turbocharged inline-4 engine in the 2018-Present Buick Regal produces 250 horsepower at 5,400 rpm and 260 lb-ft of torque at 2,000-5,000 rpm. It features direct fuel injection, dual overhead camshafts, and a twin-scroll turbocharger. The engine is compatible with premium 91-octane fuel for optimal performance and is paired with an 8-speed automatic or 6-speed manual transmission, depending on the trim level.

Regular maintenance for the 2.0L engine includes oil changes every 7,500 miles using synthetic 0W-40 oil, tire rotations every 7,500 miles, and spark plug replacements every 60,000 miles. Additionally, the engine air filter should be replaced every 15,000 miles, and the coolant should be flushed every 50,000 miles. It is also recommended to inspect the turbocharger and fuel system every 30,000 miles for optimal performance.

To replace the air filter, locate the engine air filter housing on the driver's side of the engine compartment. Open the housing by releasing the clips, remove the old filter, and install the new one, ensuring it is properly seated and aligned. For more complex installations, such as replacing the turbocharger or fuel injectors, consult a certified mechanic or follow the detailed steps in the service manual to avoid engine damage.

Common issues with the 2.0L engine include turbocharger wastegate malfunctions, coolant leaks, and fuel system clogs. Troubleshooting steps include checking for fault codes using an OBD-II scanner, inspecting hoses and connections for leaks, and ensuring proper fuel flow by cleaning or replacing fuel injectors. If issues persist, consult a certified Buick service center for professional diagnosis and repair.

To optimize performance, ensure regular maintenance is performed, including timely oil changes and filter replacements. Upgrade to high-performance air filters and spark plugs for improved efficiency. Avoid excessive turbocharger boost by maintaining moderate driving habits, and consider installing a performance tune to increase horsepower and torque while monitoring engine parameters to prevent damage.