Wheels Classic Cars: MG Magnette Sedans TheChronicleHerald.ca (registration) Road & Track also tested the new MG TF 1500 roadster in the same issue and reported that while the TF’s zero to 97 (60) time of 16.3 seconds was considerably faster, the TF’s 137 km/h (85 mph) top speed was only marginally better than the Magnette’s.