Why we love Car Tender - Tender is right. 2001 BMW 540i has been cared for by the shop for 7+ years. It runs ... no, it purrs ... when it comes back home. The best thing they did for me at the outset was make me smarter about the long-term maintenance of the Beast. It's not a cheap car to maintain so being able to budget with the shop's advice has put me in the position to keep it for a good, long time and when it's someone else's turn to have this car, they will have a unicorn.