Questions: Travel

For context we live in germany and my wife starts a new Job, for 2 years, about 40km away.

We need a fuel efficient car, thats reliable and lasts long. Most of the driving takes place on the Autobahn, which is blocked by Traffic jam in the afternoon.

Our two Favourites are currently:
Toyota Yars Hybrid fuel efficient as hell, but not on Autobahn. But in the traffic jams and within the city. Costs used about 18k€.

Hyndai i10, regular gas powered car, fuel efficient yes, but still 1L/100km more than the Yaris. But costs 5k less, about 13k€ used.

I10 costs 200€ less in insurance, so over the next 2 years the overall costs are about the same. After that we are not sure where my wife will work, if she works in the closest big city, the Yaris will be cheaper with barely 3L/100km.

Also Yaris is automatic transmission, much easier and comfortable to drive. Which is good if she sits in the car over an hour long per day.

Also anyone knows which built year we should look for?

As far as i see both cars were updated into the next generation in 2020.