

The company exercised its right to reply, and included a few uninformative graphs along the way. And not enough to reduce load on the electrical system. In other words, it has enough capacity to keep the little blue LED lit for a few seconds. Jalopnik notes that the capacitor can store about 120,000th the charge of the supercapacitor in the Mazda 6 with i-ELOOP technology. If they don't get instant results, they may assume Fuelshark's recommended variable driving conditions are to blame.Įither way, the capacitor inside the device has nowhere near enough power to do what the company says it will. If the average customer finds they suddenly get 5 mpg more on their commute for a couple of days, they may put it down to the blue-glowing doorknob rather than the variability of traffic conditions. It's this variability Fuelshark plays on to make its claims-it even says the best results will happen under variable driving conditions. Actually, it used a little more, but well within the scope of variability. In a reasonably scientific test the car used similar amounts of fuel whether fitted with the Fuelshark or not. We can't use the word Jalopnik used to describe it, but it turns out the Fuelshark is big, steaming piles of that particular word. By doing so it supposedly reduces load on the car's electrical system, and as we know, less electrical load means better fuel efficiency.

The strange alienesque device glows blue, and according to the company, uses a capacitor to "stabilize your car's electrical system". Fuelshark claims to save you ten percent or more on gas, by simply plugging the $39.95 device into your cigarette lighter.
