The BMW X1 is generally considered the better choice between the two due to its versatility, spaciousness, and off-road capabilities. The 2 Series, on the other hand, is more focused on performance and luxury.

The BMW X1 is a compact SUV that offers a more practical and family-friendly experience. It boasts a higher seating capacity, ample cargo space, and a robust off-road capability. According to the U.S. News & World Report, the X1 has a higher predicted reliability rating compared to the 2 Series, making it a more reliable option for long-term ownership. Additionally, the X1 has a larger wheelbase and overall dimensions, providing more room for passengers and cargo. This is particularly beneficial for families or those who require additional space for luggage or passengers.

The BMW 2 Series, on the other hand, is a compact luxury sedan that emphasizes performance and driving dynamics. It offers a sportier driving experience with its lighter weight and more agile handling. The 2 Series also comes with a range of advanced technology features and a luxurious interior. However, it lacks the practicality and spaciousness of the X1. The U.S. News & World Report notes that the 2 Series has a lower predicted reliability rating compared to the X1, which may be a concern for some buyers.

In terms of performance, the 2 Series offers a more powerful engine lineup, including a turbocharged four-cylinder option that produces up to 255 horsepower. The X1, while offering a more balanced driving experience, has a less powerful engine lineup, with the top-tier model producing up to 228 horsepower. However, the X1's all-wheel-drive system provides better traction and stability, especially in adverse weather conditions.

In conclusion, the BMW X1 is the better choice for those seeking versatility, spaciousness, and reliability. The 2 Series, while offering a sportier driving experience and luxury features, is more suited for individuals who prioritize performance and driving dynamics over practicality.