I've bought so called auction bikes from Yamaha, Triumph, Kawasaki, and BMW over the years. I am in the US.
Somehow BMW was able to start warranties before the final sale to consumers.
Triumph and Yamaha have given full factory warranties concurrent with the final sale to a consumer.
Kawasaki has been mixed between full factory warranty, and no factory warranty. Sometimes the Kawasakis have been bundled with aftermarket warranties.
Aftermarket warranties are marked up by a huge multiplier, so dealer cost is usually not too much compared to an auction bike's price.
In any event, as someone else pointed out, call a dealer's service department and ask when the warranty expires. They can look it up.
added:
Since this "new used" stuff is showing up in other threads, I thought I'd add a bit more here.
The 2015 R3Ts that I looked at this past month were on Triumph's floor plan, were fully eligible for the $2000 rebate offered by Triumph on new 2015 R3Ts (if the price is very low the rebate is being assigned to the dealer), and have not yet had their "in service" date established.
The key to when the warranty starts is the in service date. Once the bike is in service, the warranty starts. The bike does not have to be sold to a final end user for the in service date to be activated.
On these leftover 2015s, most of them had not been put in service at the time of sale as we approach the end of 2016. The rebates continue until 12/31. After that, all bets are off ... but if the bike is on the floor plan, Triumph still owns it, and those bikes may end up as auction bikes after 12/31.
There is no way to know without asking for details from the dealer.
But if the bike is sold as new, and titled as new, and qualifies for the rebate, and gets a full factory warranty from Triumph, I'd say it would be hard to argue that it is "new used." That's just noise on the signal.