Company cars are a mugs game now, HMRC have cracked down massively because they are "unfair" - have been for a while, but certainly still are if you want to drive a juicy GTI or R.
The only company cars worth having are fully electric ones (even hybrids are getting a kicking)
If you can take the cash, do it. You'll be far better off - I know I was 2 years ago!
Company cars are not the luxury benefit they once were and its definitely been squeezed but there is still enough to justify the taking of one.
I get an allowance, and have in the past taken the cash and gone my own way, but when lease car got smacked and had to deal with my insurance and all the associated hassle the next time around I went via the company lease scheme
By time my allowance gets taxed that's the first dent in what can pay monthly for a private lease, then I have to find a good deal, tax and insure and pay for tyres and servicing over three years - The company car route this is all covered and with my R being smacked from rear and reversed into the passenger door, it was simply one phone call and all whisked away and done for me.
The difference between taking the company option and paying the BIK and sourcing own vehicle and taxing, insuring and keeping on the road is not as wide as you would think with the added plus of zero hassle driving.
Also the VW for some reason work out really well on my company lease as there is some pretty standard mid powered versions from other brands that have middling emissions, that cost just as much as my TCR overall, - so the benefit between going company or private lease is a judgement car by car, but VW have been the winner last 9 years for me given the good company lease prices.
Also, my cars on return have reasonable wear and tear, some door dinks and kerb rash (anything major is repaired) and most I would get charged is £250 but not once has anyone even questioned one of my return, straight to auction.
The GTI TCR that ordered is going to work out less than the R in both outlay and fuel so actually be saving bit more money a month this time around.
I could actually make money if went for a zero emission box, but decent cars have always been on of my life pleasures and happy to stump up within reason