When "Cobra 11" came up on the TV screen, you already knew that you could expect some great action as well as plot holes wider than the Autobahn near Frankfurt.
Truly great stunts Hollywood would be proud of, sometimes very interesting ideas and funny plots, but in the end, each episode of the series follows the exactly same scheme: evil appears, first (mass) crash, our heroes appear on the scene, evil strikes again, heroes follow evil, grande finale (more crashs). By limiting the scene entirely on the streets and actors who are only the figures behind the wheels of the real stars, the stories are also limited quite narrow on repeating the same plots again and again. Nonetheless, "Cobra 11" is still very successful in Germany - probably the Germans are not tired of seeing the daily craziness on the streets in the real life.
BTW: if you are fond of in the meanwhile pretty rare cars of the 70s and 80s, it's strongly advised NOT to watch "Cobra 11" - your heart might break when you see cars like the Alfa Romeo GTV 6, Audi Coupè, even a Triumph Spitfire Mk I shredded in spectacular crashs.