Both models have impressive power outputs. The INFINITI QX50 is powered by a 2.0L engine, as is the BMW X4. However, you’ll find a bit more power with the INFINITI engine:

• INFINITI QX50 2.0-liter VC-Turbo engine: 268 horsepower and 280 lb-ft of torque
• BMW X4 2.0-liter TwinPower Turbo engine: 248 horsepower and 258 lb-ft of torque

However, if you’re in a pinch for time and need to get to your destination in a jiffy, the INFINITI’s greater horsepower will generate quicker acceleration.

Ride quality and preference are also important when choosing a new car. Both the INFINITI and the BMW equip Drive Mode selectors that feature multiple modes.

However, the INFINITI adds a Personal mode, so you can find the sweet spot in your ride experience. The BMW doesn't offer a similar setting.

For instance, check out how much passenger space is offered in both models:

Despite their different body styles, the QX50 and the X4 are neck-and-neck in terms of passenger space, with the INFINITI slightly edging out the BMW. 

However, the QX50 excels in cargo space:

• INFINITI QX50 cargo capacity (with second-row seats down/up): 65.1 cubic feet/31.4 cubic feet
• BMW X4 cargo capacity (with second-row seats down/up): 50.5 cubic feet/18.5 cubic feet

With that being said, the INFINITI may be the better option when you need plenty of space for your outlet shopping sprees or your weeklong camping trips.

Fortunately, both the QX50 and the X4 come equipped with impressive safety suites. In fact, the BMW has similar features to these found in the INFINITI:

Where they begin to differ is in their additional standard safety systems and active intervention features.

The INFINITI QX50 equips these intelligent features on all its trims:

Unfortunately, the BMW X4 doesn’t offer similar features on its base model. So, if you’d prefer more assurance on the open road, the INFINITI QX50 is right up your alley.