Overview
EcoFuel Saver is a compact device that plugs into the OBD-II diagnostic port found under the dashboard of most cars made since 1996. The seller markets it as fine-tuning your vehicle for lower fuel consumption.
We don't make claims about fuel savings. Proven ways to use less fuel include correct tire pressure, smooth acceleration and regular servicing.
How it works
OBD-II plug-ins connect to the car's diagnostic port. Fuel economy depends mainly on driving habits, tire pressure, vehicle condition and load, so measure your own mpg before and after if you try one.
Key features
- Plugs into OBD-II port
- No tools needed
- Compact and lightweight
Quick specs
| Type | OBD-II plug-in |
| Fits | Most cars since 1996 — check listing |
| Install | Plug in |
| Price (USD) | $49.99 USD — for 1 unit |
Specs vary between sellers and batches. Use the listing as the final word.
Who it's for (and who should skip it)
A good fit for
- Drivers who want to test it and track their own mpg
Probably skip it if
- Anyone expecting a guaranteed mpg improvement
How to use it
- Locate the OBD-II port under the dash.
- Note your current mpg.
- Plug in as instructed.
- Track mpg over several tanks.
Before you buy: checklist
- Vehicle compatibility
- Return window
- Multi-unit pricing
Frequently asked questions
Will it improve my mpg?
We don't make that claim; measure your own results.
Will it affect my warranty?
Check with your dealer before plugging in third-party devices.
Ready to take a look?
See current price, photos and return terms on the seller's page.
Our take
The EcoFuel Saver OBD-II Device is worth considering if it matches the "good fit" list above. Check the listing details against the checklist, and keep the seller's return window in mind. We don't give star ratings because we'd rather you compare the specs against your own needs.
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