Metromile Referral Code & Recommendation page. Welcome! Enjoy and share Metromile referral links on this page. Share all your referrals in your own free page. Fan of Metromile? Make sure you give a thumbs-up recommendation. Follow and influence friends & others. Pay-per-mile insurance is affordable car insurance for low mileage drivers. If you don't drive much, you shouldn't pay much for car insurance.