human
One of the questions should be how many km annually that Alina & Vladimir intend to drive.  With diesels becoming more complex (and requiring diesel exhaust fluid) there may not be any meaningful fuel savings unless they drive a lot.  In addition, modern gasoline engines, paired with modern 7 & 8 speed automatic transmissions get substantially better real world mileage than the same models from only a few years ago.

I'm a big diesel fan and have owned many, but my current fleet doesn't have any in it.
gpt
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