Mechanic George Swain from Swain Independent Repairs in Taupo agreed, describing the crashed bus's mileage as "very minimal".
"Whereas if you got hold of an old InterCity bus ... most of those have done over 1-point-something million kilometres.
"You'd be surprised how many vehicles running around out there like trucks that have done up in the million plus [kms]."
The RAL bus failed its CoFs on July 29, 2004; November 23, 2005; December 21, 2005; May 8, 2008; May 14, 2009; June 17, 2010; May 3, 2011; June 14, 2012; June 6, 2014; May 13, 2015; and on December 8, 2016.
Thomas said failing a CoF could have meant the operator had taken a bus in for inspection to find out what work needed to be done on it.
"A lot of people will use taking their vehicle to a testing station to see what needs to be done. Having nine failures over that period of time ... that's not a news story. So what?
"We used to do that years ago ... but the better way to do it these days is to take it to your mechanic first and they do a pre-check first before it goes to get its CoF."
Thomas said CoFs were notoriously difficult to pass.
"Sometimes we will fail ... our engineers don't pick up everything. They're not looking at everything these sometimes pedantic inspectors are looking for.
"One of our last buses failed for a faded sticker. You could still read the sticker ... that's kind of crazy."