There can be some tax benefits to putting a car through your limited company, but it depends on the car you buy and how you use it. If the car is only used for business purposes, it’s eligible as a capital allowance, but if you also use it for personal use, it’s considered a taxable benefit or Benefit in Kind (BiK) so could increase the amount of tax you need to pay.
When buying through the business, you could claim your car finance payments and any interest due. Your company accounts will also need to pay for the car's running costs such as insurance and tax, which are deductible from Corporation Tax. If you do choose this approach, keep in mind that cars with lower emissions often qualify for highest allowances.
However, if you plan to use your car for personal reasons most of the time, you might want to consider another option as the BiK tax due might outweigh the capital allowance gains.