> Yes - the 2-cylinder.
>
> They wrote in the handbook, if engine "new" up to 25 / 40 / 70 km/h in
> gear 1 / 2 / 3, but not faster.
Right, that's to keep the revs low to "run the engine in" - help the new
components to wear to each other, and ensure a long life. That's only for
the first couple of thousand km, though. After that, just drive it.
> As it has no rpm-Meter I am a little bit unsure...
Don't worry about it. You won't over-rev it. The power starts to go away a
LONG time before you'll hurt it. Use all the revs - the two-cylinder
engine, both 2cv and Visa, loves to be driven hard, and driving it too
carefully is one of the best ways to kill it.
Just keep plenty of good clean oil in the engine, and have it serviced
properly, including cleaning the oil cooler (behind the fan at the front of
the engine).