Tax treatment when buying a new zero emission car within a business partnership

007_spectre

I'm trying to get my head around the tax rules for the above. I will be buying a zero emission electric car that will be used for both business and personal use. It will probably be purchased outright, so registered in my name, but could possibly be bought on a business lease.
I am in a business partnership with my wife, we are not a limited company.
My interpretation of HMRC rules is that if I buy the car outright I can claim capital allowance for the full car value (as it is a 0 emission EV) in the tax year I take delivery and then allocate 100% of the annual partnership business profit (which will be less than the value of the car) and so pay no income tax. In fact as there would be a difference I could also make a lump sum withdrawl from my pension (which is in drawdown) to ensure I use all available personal allowance. 
As my wife would then have £0 income to declare, she could put her own personal pension into drawdown (we are both 55+) and make a lump sum withdrawl to use her £12,570 personal allowance, again with no income tax to pay.
This kinda seems too good to be true as the tax savings offset the price of the car by a significant amount, so I'd love to hear from anyone who has been through the same process or any professional who has definite knowledge.
I have a second, less important, question regarding how I then claim for usage of the car in the first and subsequent tax years, i.e. maybe I can't as I've claimed 100% capital allowance or do I claim using the standard HMRC simplified mileage allowance rates?

Jeremy535897

When you buy an electric car in a trading partnership, you can claim 100% first year capital allowances on the business proportion. If the car will be used 70% business 30% private, for example, you can claim 70% of the cost. You can also claim 70% of the running costs (insurance, fuel, service, road fund licence etc). The date of delivery is not the relevant date, but rather the date on which the obligation to pay for the car becomes unconditional (but there are special rules for hire purchase and extended credit terms).

If as a result the partnership makes a tax loss, the individual partners may set that loss against their other taxable income in most cases (there are a lot of detailed rules on this).

EDIT: I should add that you have to bring in the business proportion of the sale proceeds as taxable profit when the car is sold.

Savvy_Sue

Could I just suggest that if you currently have an accountant, they'd be the best people to advise you on this, and if you don't, this may be the time to find one. 

I don't doubt what Jeremy says (and I know nothing!), but note his comment: 

Jeremy535897 said:

(there are a lot of detailed rules on this).

Jeremy535897

Savvy_Sue said:

Could I just suggest that if you currently have an accountant, they'd be the best people to advise you on this, and if you don't, this may be the time to find one. 

I don't doubt what Jeremy says (and I know nothing!), but note his comment: 

Jeremy535897 said:

(there are a lot of detailed rules on this).

I agree with you.