EIM23025 | Car benefit: scope of the charge
From HM Revenue & Customs · Employment Income Manual
The car benefit charge is the only charge on the benefit of a car available for private use. But there are also other charges where:
fuel is provided for private motoring in the provided car (see EIM25500 onwards), or
expense is incurred by an employer (or another person acting on the employer’s behalf or otherwise by reason of the employment) in providing a chauffeur for the car (see EIM23045)
fines or penalties are incurred in connection with congestion (EIM21680) or parking charges (EIM21686) and it is possible for the employee to become liable to pay them.