One could find details on the miles per gallon a Merceded Cosworth gets with highway driving from someone that owns the car. They should be able to give an answer, also a dealership that deals in similar cars should be able to give an accurate answer.
every 3k miles if you do a lot of city stop and go driving and 5k miles if you do a lot of highway driving. generally works for all cars.
The EPA range estimate for the 2014 Mercedes-Benz Sprinter is N in the city, A on the highway.
The EPA range estimate for the 2010 Mercedes-Benz Sprinter is N in the city, A on the highway.
The EPA range estimate for the 2013 Mercedes-Benz Sprinter is N in the city, A on the highway.
The EPA range estimate for the 2011 Mercedes-Benz Sprinter is N in the city, A on the highway.
The EPA range estimate for the 2012 Mercedes-Benz Sprinter is N in the city, A on the highway.
They "reset" while driving at highway speeds.They "reset" while driving at highway speeds.
Highway hypnosis
Highway driving tends to be consistently moving forward, whereas city driving is a lot more stop-and-go. Higher speeds are reached on the highway. Highway driving tends to be straight line and long curves, whereas city driving has a lot more turns.
The EPA range estimate for the 2005 Mercedes-Benz SLK-Class is N in the city, A on the highway.
The EPA range estimate for the 2005 Mercedes-Benz M-Class is N in the city, A on the highway.
The EPA range estimate for the 2005 Mercedes-Benz SL-Class is N in the city, A on the highway.