Salary sacrifice car scheme seems too good to be true when leasing an EV?

This seems too good to be true, so I’m certain I’m misunderstanding something.

I earn £130k/year. For the past few years I’ve sacrificed everything over 100k into my pension so I restore my full personal allowance. So far so good.

= 10833 / month -2500 / pension per month = £5.4k take home

Our firm now offers a salary sacrifice car scheme. Basically, you choose a car to lease and it comes in a package where they cover tyres, maintenance, and even insurance. In exchange i sacrifice the equivalent salary AND pay BIK on the p11d value of the car.

Where is my error:

P11d value of the car: £150k Lease package price: £1600/mo salary sacrifice (I.e. pre-tax) BIK 25/26: 3% (it’s an EV) on 150k = £ 375/mo Pension £1275/mo to mop up the remaining salary & taxable income over 100k = £5k take home

I.e. I can have a £150k land yaught, for £400 per month? Albeit with reduced pension contributions of only £15k instead of £30k.