2023 BMW M3 CSL spy shots: Hardcore sedan coming soon

BMW’s current M3 sedan and related M4 coupe have only been with us for a bit over a year, but hotter versions of both cars are already out testing. The new versions are expected to revive BMW’s CSL badge, and we should see them unveiled later this year as part of the 50th anniversary celebrations of the BMW M division. If you’re unfamiliar…