The BMW X4 and X6 are both Sports Activity Coupes (SUVs with a coupe-like design) produced by BMW. They are known for their unique combination of sporty performance, sleek design, and versatility. However, the two models have some key differences, mainly in their size, design, and pricing.
In summary, the main differences between the BMW X4 and X6 are in their size, design, performance, and pricing. The X4 is a compact Sport Activity Coupe aimed at buyers looking for a sporty, agile, and more affordable option, while the X6 is a larger, more luxurious, and performance-oriented vehicle targeted at those who prioritize space and power.