The government has refused to say how much an audit to make motorcycle road racing events more eco-friendly has cost.
MHK for Middle Stu Peters asked the question for written reply from Enterprise Minister Tim Johnston.
Mr Johnston said the audit's cost had been paid for by a TT sponsor, with no extra cost to the taxpayer.
He explained that the review was part of the island's legal requirements under the 2021 Climate Change Act.
Two more schemes backed by government fund
Island to get Bikesafe scheme for first time
Jurby Junk's Stella dies aged 90
No plans to publish UK's assisted dying letters
Burst water main disrupts Onchan supply
Government advice following spike in data breaches
Plans for four-foot flood walls at Ramsey harbour
Garage blaze in the early hours of this morning