Toyota Avensis or Mazda 6-diesel

Hello, we want to get a used station wagon at the end of this year. Currently we drive an Avensis from 2003 (petrol, 1.8 engine) for 9 years and are very satisfied despite the age. Since I will drive at least 35,000 KM a year from next year, we wanted to buy a diesel. We can’t decide whether Toyota or Mazda, both like us very well and we have not had bad experiences so far, neither we with our Avensis, nor m a father with his Mazda (petrols). Since the age is not so important to us, but rather the reliability is in the foreground, I wanted to ask the professionals here which year of construction of both mentioned options is recommended.