
The BMW X3 is equipped with the BMW B-series B48 engine. Here are some details about the BMW X3: Engine: The BMW X3 features the BMW B-series B48 engine, which includes Twin-Power twin-scroll single turbocharger, high-precision direct injection system, Double-VANOS dual variable camshaft timing system, and VALVETRONIC fully variable valve control system. Engine maintenance: Regularly change the engine oil; avoid excessive load and aggressive driving; avoid high RPM driving when the engine is cold; avoid prolonged idling in place.

I remember the engine models for the BMW X3 vary significantly by year and market. In North America and Europe, the common ones are the B-series engines, such as the base model's B48 turbocharged four-cylinder with around 248 horsepower, while the high-end version like the M40i pairs with the B58 inline-six, delivering up to 382 horsepower. Post-2020 facelift engines are more efficient and feature start-stop functionality. Engine model codes like B48B20 indicate displacement and design details. When choosing a car, you need to check the specific year—the 2018 model might be older, while from 2021 onwards, some versions incorporate a 48V mild hybrid system, affecting fuel consumption. For daily maintenance, the B48 is more economical, with spark plugs needing replacement every 50,000 km, whereas the B58 offers stronger performance but has pricier parts. Forum veterans often say checking the owner’s manual or VIN is the most reliable way to avoid buying the wrong parts.

I recently bought a BMW X3, equipped with a B48 model engine - a 2.0-liter turbocharged unit that delivers ample horsepower and quick acceleration. Before purchasing, I researched that different configurations come with different engines; the xDrive30i version uses the B48, while the M40i employs the B58 six-cylinder. The manual clearly specifies the engine code as B48B20, with detailed information. The engine performs smoothly in city driving and handles highway overtaking effortlessly. It's best to use 91-octane gasoline or higher, though occasionally using lower grades is acceptable. I recommend owners regularly check the air filter to prevent carbon buildup. A friend's same model has clocked 100,000 kilometers with the engine still running solidly, which speaks volumes about BMW's engineering. Browsing automotive forums, I've noticed that engine models affect resale value; the B58 version holds its value better but comes with slightly higher insurance costs.

The common engine models for the BMW X3 are the B48 or B58 series. Having worked on many of these, the base versions mostly use the B48 four-cylinder turbo, model B48B20; the performance versions feature the B58 three-liter six-cylinder. The engines are reliable but require attention during maintenance: B48 spark plugs should be replaced around 50,000 km, and the B58's turbo cooling system is prone to leaks. Checking the engine requires looking at the year's label; pre-2020 models might have older versions. There are significant differences between versions in different markets, such as the diesel B47 engine available in Europe. It's recommended to use original oil during maintenance. The VIN code can confirm the specific model to avoid incorrect fault diagnosis. Common issues include minor problems with fuel pumps or sensors, which should be repaired early.


