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Dimensions:4.25" L x 1.6" W x 1.6" H
Product Weight:0.28 Lbs

Setup and operating instructions are found in the product manual.

Shipping Details
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100% Satisfaction Guarantee
  • If you are not satisfied with your purchase within 60 days, you can return it for a replacement or a refund.
  • Returned products must be in a new, unused condition, and contain all original packaging and accessories (including all warranty cards and product manuals/instructions). Items with a gift receipt from the packing slip may be returns for an eGift Card.
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Automobile Fuel Efficiency Improver

(18 Reviews )

Item # 200321

Item is sold out and is no longer available

FREE $25 promo Gift Card with every purchase.
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Highlights

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.

Customer Reviews

18 Reviews

94%

of respondents would recommend this to a friend

5 Stars
7
4 Stars
10
3 Stars
1
2 Stars
0
1 Star
0
Highest Rated

I like this product and would buy it aga

Just bought and not sure how it will help only time will tell.

More Details
Pros
Attractive
Best Uses
Travel
Was this a gift?
No

Describe YourselfCasual User

Bottom LineYes, I would recommend to a friend

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By Jim Bo

From Tucson AZ.

It Works!

Very efficient,easy to use. Has greatly improved my mileage. I would highly recommend it.. Increased my mileage by 20%.

More Details
Pros
Easy to use
Efficient
Cons
None
Best Uses
Improved Mileage
Was this a gift?
No

Describe YourselfPower User

Bottom LineYes, I would recommend to a friend

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By kayak Sal

From Pittsboro, NC

Verified Reviewer

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.

More Details
Pros
Attractive
Compact
Convenient
Lightweight
Best Uses
Fits Great In Slot
Travel
Was this a gift?
No

Describe YourselfEnthusiast

Bottom LineYes, I would recommend to a friend

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By Ridge Runner

From Whitehall, NY

I would definitely purchase this item

My gas mileage has improved

More Details
Pros
Attractive
Compact
Durable
Lightweight
Perfect size
Simple Controls
Best Uses
Travel
Was this a gift?
No

Describe YourselfEnthusiast

Bottom LineYes, I would recommend to a friend

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By Ridge Runner

From Whitehall, NY

I would buy this product again and again

Very good product

More Details
Pros
Attractive
Simple Controls
Cons
Flimsy
Best Uses
Travel
Was this a gift?
No

Describe YourselfPower User

Bottom LineYes, I would recommend to a friend

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By joanna aim

From City of Industry CA

Verified Reviewer

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 up's this fuel doctor paid for itself. This is the best Sharper Image product I have ever purchased!

More Details
Pros
Attractive
Simple Controls
Cons
Lost use of 12Volt outlet
Best Uses
Save Big Money
Travel
Was this a gift?
No

Describe YourselfCasual User

Bottom LineYes, I would recommend to a friend

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By GasMan

From Lake Forest, IL.

Verified Reviewer

It's 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.

More Details
Pros
Compact
Durable
Simple Controls
Best Uses
Travel
Was this a gift?
No

Describe YourselfEnthusiast

Bottom LineYes, I would recommend to a friend

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By Rocky Road

From Denver, CO.

I'm 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. I'll have to read them & then I'll know. This product is easy to use!

More Details
Pros
Attractive
Compact
Durable
Lightweight
Simple Controls
Best Uses
Travel
Was this a gift?
No

Describe YourselfCasual User

Bottom LineYes, I would recommend to a friend

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By Organic living in my forties

From Evanston IL

Verified Reviewer

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.

More Details
Pros
Compact
Lightweight
Best Uses
Travel
Was this a gift?
No

Describe YourselfCasual User

Bottom LineYes, I would recommend to a friend

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By Larry031

From Levittown,Pa

Verified Reviewer

works

Does work, but not as well as promised.

More Details
Pros
Attractive
Was this a gift?
No

Describe YourselfCasual User

Bottom LineYes, I would recommend to a friend

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By Zman

From New York