Efficiency (free)

Efficiency (free)

10,000 - 50,000 downloads

Add this app to your lists
Efficiency is a powerful trip computer for OBD2 enabled vehicles that is focused on helping you maximize your fuel economy.

Please report any problems you may encounter. Make sure to include your car model, year, OBD2 adapter, phone model, and Android version you're using.

App Requirements:
- A OBD2 enabled vehicle built in 1996 or newer
- ELM327 Bluetooth Adapter
- An Android 2.1 phone/device or newer with Bluetooth capabilities.

For Help visit http://efficiencyapp.wordpress.com/help/ or email to efficiencyapp@gmail.com

Tags: Efficiency, OBD2, OBDII, Elm327, Ecu, MPG, fuel economy, fuel efficiency, Eco meter, ecometer, econmeter, green meter, ECU, car, truck, speed, rpm, gas, OBD, OBD-II.

Tags: obd2 mpg, efficiency obd, elm327 fuel consumption, obd eco, obd mpg, obd fuel consumption, efficiency, elm327 mpg, obdii eco drive, fuel economy obd.

Recently changed in this version

- Several Bug Fixes
- Calibration simplified
- Improved compatibility
- Improved Performance
- Fixed notification icons

Comments and ratings for Efficiency (free)
  • (40 stars)

    by Paul Suquet on 02/05/2014

    Doesn't connect to my obd2

  • (40 stars)

    by Ricardo Bortolon on 19/03/2014

    Was working week but after customizing a few settings, all the displays changed to mph and wouldn't change back. Reinstalled and going to troubleshoot, hopefully not anything that's a deal breaker. Major issue, though: notification remains after force cl

  • (40 stars)

    by Daniel Coady on 26/02/2014

    Seems good so far. Only used it once. Took a while to connect but most OBDII apps seem to. I didn't have any problems with it locking up. Looking forward to trying the auto start feature. Also, go to the help page. It helps.

  • (40 stars)

    by Bruno Flavio on 30/10/2013

    Units are MPG, changing settings has no effect. The connection seemed very unstable, values updated erratically.

  • (40 stars)

    by Matthew Wilson on 24/08/2013

    I was looking for something simple to track MPG with my car, but it never even saw the bluetooth adapter. Other apps work just fine, this one apparently does not.

  • (40 stars)

    by Nathan Tucker on 17/07/2013

    Useto work befor last two updates

  • (40 stars)

    by Nick Sutton on 02/06/2013

    Not sure what others are taking about. For a simple and to the point mpg info this is the perfect app. Better than torque for this job. One thing though... There is no where to put in miles for calibration. I emailed the developer.