What is the fine-grained topic of the following text: We’ve yet to get behind the wheel of the M340i xDrive range topper, but we’ve seen a few numbers and, well, we’ll leave it to you to decide if the car can punch its weight when faced with the Audi S4, the Mercedes-AMG C43 and a welter of other tasty rivals. Only return the topic.
Comparative analysis of the M340i xDrive with its rivals.