Are you trying to save money on your car insurance?

Martin Lewis, 48, shared an incredible hack to saving hundreds of pounds on renewals policies.

Posting in his weekly MoneySavingExpert newsletter, the guru revealed how a female customer saved a whopping £520.

He wrote: "Our car insurance cost-cutting system can save you hundreds.

"Though many mistakenly leave it out of a new year money makeover, thinking it's impossible to save if not at renewal."

The financial guru claims the system can help customers save money when their car insurance policy is about to expire.

He then revealed how one fan managed to save a few hundreds in the process.

Couple looking at a laptop together
Car owners must check for policies at least 24 days before their agreement ends

The woman, named Penny, told Martin: "Thanks for your great tips on car insurance.

"I followed them and saved a massive £520 on my renewal. Keep up the good work."

Martin says the best time to compare car insurance prices is 24 days before renewal, but if that's not now, check anyway.

He claims if people leave it to the last moment, they're at risk of paying a higher price for their car insurance.

UK car road tax
Car payments can be quite expensive

Also Martin encourages drivers to never just auto-renew their policies, but to combine comparison websites instead.

The guru adds people must check if Direct Line can beat their top quote and to consider a multi-car policy if they can.

He concluded: "Always check the policy is right for you. And when claiming, if unhappy, you can go to the ombudsman.

"As with any insurance, check the policy details and if insurers are regulated by the Financial Conduct Authority before you buy."

Martin even has a cheap car insurance guide to help customers save money.

If motorists add a responsible 2nd or 3rd driver to their policy, this can also help to drive costs down.

It really is important to shop around before you make a decision and using comparison websites are helpful.

The guru suggests using MoneySupermarket first, then Confused.com, Gocompare and finally Compare The Market.