Unless they drive it from a dealer to another (Which is not uncommon)
and the OP said that happened with this car.
It is common knowledge that the requirements of a "Break In" are no longer required due to the method of construction
Mazda does still recommend avoiding a few things during the first 600 miles to "add to the performance, economy, and life" of your car. Which basically sounds a lot like a 'break-in period':
No special break-in is necessary, but a few
precautions in the first 1,000 km (600
miles) may add to the performance,
economy, and life of your Mazda.
- Do not race the engine.
- Do not maintain one constant speed,
either slow or fast, for a long period of
time.
- Do not drive constantly at full-throttle
or high engine rpm for extended
periods of time.
- Avoid unnecessary hard stops.
- Avoid full-throttle starts.
- Do not tow a trailer.
It would be nice to know more of how it was driven for those initial miles and although i realize the way it was driven for that time probably will have no impact on your ownership of the vehicle I still prefer lower miles on my "new" cars. And have passed on cars before that had that many on it. You just never know if it was an executive type that drove like a normal human or someone who redlined it all the time.