Only gave it a star because there was no zero star option. What an absolute con! Sold on the basis you can save money by 'safe' driving. Reality is 11 months in and I've never scored a point on braking. It's been permanently on zero. Explanation... I need to do less stop start driving. I live in a city, what am I supposed to do ignore the lights and rush hour traffic? My onboard computer tells me my average speed is 16 miles/hour. How on earth can my braking score be zero at that speed? Never dealt with a company who are so obnoxious about their product being perfect and the false results being my fault. Tempted to report them for fraud. How can I save money if it refuses to score my braking. Loads of reports of similar issues online. Avoid this product or use it for one year then go elsewhere!