BLM32365 | Taxation of leases that are not long funding leases: finance lessees: termination adjustments: rental rebates - special cases
From HM Revenue & Customs · Business Leasing Manual
There is specific guidance on rental rebates for the following situations:
Before 1 April 2009 for companies and 6 April 2009 for individuals
where rebates are received of rentals under finance leases of motor cars costing over £12,000, see BIM47717
On or after 1 April 2009 for companies and 6 April 2009 for individuals
from this date the amount of the rebate or reduction in rent which is taxable is reduced in the same manner as that described at BIM47717 but the criteria for application is instead based on the levels of CO2 emissions of the car in question.