Mercedes A-Class (W169) or Opel Meriva A

Hello, we would like to buy a car for our mother soon (65 years old) and fluctuate between an A-Class W169 and the Opel Meriva A. The A-Class has already been driven (probe drive Meriva will follow soon) and also very much agrees with our mother. But it’s just that we have to consider the sandwich construction method. Therefore we have the following questions: – Are reperatures in the area of the engine compartment in the A-Class also available in every free workshop, or is this only with Mercedes and – How high are the maintenance and repair costs of both models compared to each other (possibly examples) ? – What are typical weak points of these two models. – Where do you see advantages and disadvantages. We want to spend a maximum of 6000,-. The car should be from year 2006 and have the highest 130,000 km down. As engines we have decided with the Opel for the 1.6 gasoline and for the A-Class it should be an A150 or A170 petrol. The car would be We’d be happy if we could be helped here.