Can you tell me why you are taking a company car if you don't want one please. What will you use it for exactly?
Whoever in HMRC told you there was no way out of being taxed on a car benefit was wrong. As you say, it contradicts HMRC's own guidelines. Take a look here, here and here for information on how you and your employer should go about escaping the car benefit. It's quite straightforward to get the paperwork right but you must avoid using the car for any private journey and that includes home to office and office to home. If the ban on using the car for private travel is enforceable, then it matters not that the car maybe parked at your home at night.
I hope this helps but let me know if you have any further questions.
Hi.I'm just following up to find out if my answer helped or if you have any further questions.