Home » A New Number in the Series. The 4 has arrived! » BMW 4-Series launch BMW 4-Series launch October 19, 2013 benautobahn 0 Related Previous: A New Number in the Series. The 4 has arrived! About The Author benautobahn Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of new posts by email.