I hold a Opel Corsa 2003 Model, it is a nice car to own..i have done 73000kms, it gives a milage of 10-11km oi city and 13-15 in Highways with AC, the same I had a Maruti 800 AC giving a mileage of 13 IN city and 16-17kms in highways with AC.
The difference is the Safety, Reliability , Comfort in corsa when compared to Maruti 800. The mileage variations is only 2 -3 kms/Litre....A nice car in terms of comfort, safety, reliability...when compared to Maruti’s.
Maruti’s are with low maintenance and less in safety when compared to German Engineering..