/ Automobile Fuel Efficiency Improver (Item #200321) × Automobile Fuel Efficiency Improver Item # 200321 WAS $59.99 NOW $39.99 Item sold out and is no longer available The Automobile Fuel Efficiency Improver reduces electrical interference in your vehicle's power system to cut your gas consumption by up to 20% — especially on older vehicles. Conditioning the vehicle’s electrical systems allows its electronic control unit, fuel injection and engine timing equipment to operate more efficiently. When the engine runs more efficiently, it requires less fuel, produces more power and reduces CO2 emissions. It’s simple and easy to use: just plug it into your cigarette lighter. Not for use on hybrid or electric cars. 4.3 94.7% of respondents would recommend this to a friend Write a review Automobile Fuel Efficiency Improver The Automobile Fuel Efficiency Improver reduces electrical interference in your vehicle's power system to cut your gas consumption by up to 20% — especially on older vehicles. Conditioning the vehicle’s electrical systems allows its electronic control unit, fuel injection and engine timing equipment to operate more efficiently. When the engine runs more efficiently, it requires less fuel, produces more power and reduces CO2 emissions. It’s simple and easy to use: just plug it into your cigarette lighter. Not for use on hybrid or electric cars. See more details Item # 200321 4.3 94.7% of respondents would recommend this to a friend Write a review Read reviews Features Specifications Reviews Features Automobile Fuel Efficiency Improver Plug the Automobile Fuel Efficiency Improver into your vehicle's 12V lighter socket and you're on your way to better gas mileage! You’ll use up to 20% less gas, save money and make fewer trips to the gas station. • Easy to install — plugs into the cigarette lighter • Reduces electrical interference in your vehicle's power system • Gets your vehicle's engine operating more efficiently • Can cut gas usage by as much as 20% • Helps fight air pollution by reducing CO2 emissions • Ideal for older cars • Not for use on hybrids or electric cars Pin It Specifications Specifications Length: 4.25 Inches Width: 1.6 Height: 1.6 Inches Weight: 0.28 Lbs Reviews WAS $59.99 NOW $39.99 Item sold out and is no longer available You May Also Like Digital Tire Pressure Gauge $29.99 Travel Sleep Sound Machine with Alarm $99.99 Emergency Handcrank Power Radio with Solar Panel $79.99 Review Content The product works. Ive only had this for a short time, but I noticed a difference in the mileage. I drive a lot for work and I see a difference. Wow, This Gismo saved me about 15% MPG!! I just plugged it in and the Fuel Doctor is now saving me about 15% or about $8 bucks every time I fill up my tank. I drive an older Pontiac and i thought I would give this Fuel Doctor a try with my Gas Guzzler. So with 8 fill ups this fuel doctor paid for itself. This is the best Sharper Image product I have ever purchased! It Works! Very efficient,easy to use. Has greatly improved my mileage. I would highly recommend it.. Increased my mileage by 20%. I would definitely purchase this item My gas mileage has improved Gas Saver 1.2 gallons per mile Gas saver? I cleared my cars computer data then placed the product in my cars outlet. based on the new computer data I am getting 1.2 additional miles per gallon of gas. If you are wanting 10 plus miles per gallon, then this produce is not for you. ONLY HAVE 1 WEEK ONLY HAVE ONE WEEK NEED MORE TIME FOR A BETTER EVALUATION product really works as advertised I have used this for two weeks now and have scene solid 10% fuel savings Dont know if it works It looks nice and doesnt get in the way but I have not noticed any significant differences while using this product. Great A++++++ GOOD Im not sure if it works yet I love the concept but am not sure if it works yet. Older reviews tell you how to determine the gas savings. Ill have to read them & then Ill know. This product is easy to use! Has improved my gas mileage I keep this product in the cigarette lighter all the time and it has improved my mileage by adding an additional 5 miles per gallon. works Does work, but not as well as promised. i FIND THIS PRODUCT AGOOD DEAL In the short time I have been using his product I have notice a increase in my gas mileage. I like this product and would buy it aga Just bought and not sure how it will help only time will tell. It works This item is easy to install but I did have to give up my 12 volt outlet. ( I had thought that it came with a 12 volt outlet attached but that must be purchased separately.) This item did increase my gas mileage by over 2 miles/gallon. With the first full tank. I understand it should be higher going forward. Its simple and it works! Times are tough and I was looking to save where ever I could. When I saw the Fuel Efficiency Improver, I thought I would give it a try. With a money back garantee, I figured I had nothing to lose! I did a test on my 1990 Toyota Camry and i got over 12% savings in MPG. Pretty cool, so this simple plug-in device did work. Now I need to buy some new tires. Great Product I gave this to my boyfriend as a gift. He was excited to use it but realized that it would not improve his fuel efficiency because his car is too new of a model. We then gave it to his dad and he said it works great with his older vehicle. I would buy this product again and again Very good product would buy this product again surprised that i am actually getting the 10%+ fuel savings Customer Service Online Return Center Track Order Retail Purchases Customer Service Center Contact Us Frequently Asked Questions Site Map Mailing Preferences Corporate About Us Camelot Venture Group Affiliate Program Licensing Opportunities Careers Gift Cards Press Releases Sharper Image Blog Shopping Return Policy Shipping Information Corporate Gifts Catalog Request Retail Store Locations Receive exclusive offers and new product announcements from SharperImage.com 1-877-202-9337 Your browser blocks some 3rd party cookies by default. By clicking on this page you allow our partner Criteo to place its cookies and serve personalized ads. You can read more or disable Criteo ads here. This notice only appears once.