MyCarma - Personal Fuel Economy Label - Mobile App

WINNER: Grand Prize - Popular Choice

A personal fuel economy label for every American.

Please make your own label! The Android version is available for download on Google Play at:

The intro video is available above and also at:

A walkthrough for the app is available at:

More detail on how we develop the vehicles models is given here:

What is MyCarma?

MyCarma generates your personal fuel economy label on new vehicles, using your driving data.

The most accurate way to generate a personal fuel economy label, and the corresponding gas savings, is to base the analysis on your personal driving cycle. That is exactly what MyCarma does.

MyCarma logs your personal drive cycle using an app on your smartphone. After 7 days the drive cycle is fed into software models of the three new vehicles you are most interested in. At that point the MyCarma servers simulate those vehicles on your drive cycle (kind of like those vehicles were driven behind you for the week you had the app logging) and estimates your personal fuel economy on those vehicles. The associated fuel savings are calculated for your specific drive cycle.

MyCarma is easy, accurate, and all about you.

Potential Impact:

A. The most important decision you make related to fuel economy is the car you buy. You can change your driving habits, but at the end of the day, your best opportunity to save gas is to select the most fuel efficient vehicle that matches your needs. The initial MyCarma results have shown that by providing personal fuel economy labels and the corresponding gas savings estimate there is a notable increase in the average fuel efficiency of the purchased vehicle.
Car buyers discount the fuel economy values in generic fuel economy labels as they recognize that those values are generally not reflective of how they drive. The result is a high risk-premium being placed on fuel savings, resulting in significantly less uptake of fuel efficient technologies than simple economics would estimate. The theory behind this has been well documented by Dr. David Greene at ORNL.

B. Supporting CAFE. Fuel efficiency increases are mandated, but without customer education and deploying easy and simple methods to demonstrate the fuel savings of these vehicles there will be substantial push-back from car buyers due to the increase in the purchase price of the vehicle. MyCarma does this.

C. Critical for Plug-In Vehicles (and the "EV Everywhere" Grand Challenge) . The benefit of the MyCarma personal fuel economy label is especially obvious when looking at plug-in vehicles. The labels for PHEVs or EREVs are very difficult to interpret as they provide gasoline and electric numbers. The average user has little/no idea on how to translate that into an mpge and fuel savings value for them. MyCarma makes this simple.

Creativity and Innovation:

MyCarma represents a completely new way to generate fuel economy labels. The standard approach is to develop labels based on generalized drive cycles. MyCarma leverages GPS technology, cyber-physics (AKA. Model-Based Design), and Cloud Computing to generate personal fuel economy labels. Additionally, those models are heavily developed upon Open Data. In other words, MyCarma takes a process/technology used to design the vehicles and for the first time ever uses that technology to resolve a critical issue in purchasing high efficiency vehicles – namely, generating a personal estimate of the expected fuel savings.

Use of Open Vehicle Data:

A key element of the MyCarma system is the generation of vehicle models that are capable of accurately simulating the vehicle performance over a wide variety of drive cycles. The development to these models relies heavily on Open Data. In the case of plug-in vehicles the Open Data is supplemented by additional data (“Non-Open” Data). In any case, Open Data is a critical component in the development of the MyCarma library. In the case of using the OBD logger, as opposed to the Mobile App, the system uses exclusively Open Data to obtain the personal drive cycle. In all cases, Open Data is a critical part of the MyCarma system, which is then complemented by GPS data captured on the smartphone and cloud computing that is used to generate simulation results in an acceptable amount of time.


The app has been successfully developed and deployed on Android. iPhone and BlackBerry apps are in development.

A key feature of the implementation of the app is automatically drive cycle acquisition, as opposed to manual logging. Accordingly the application stays on standby at all times and wakes when it detects a drive cycle. This was a key design decision as it was important that all of an individual’s drive cycles are logged. Relying on the driver to manual start and stop the application every time they drive was determined to be an unreliable method. To ensure safe operation, the app waits until the end of the trip to ask the user to confirm the validity of the trip (ie. discard trips that are logged when you are taking a bus).
Using the mobile app as opposed to an OBD logger slightly reduces the accuracy of the system, but the system remains significantly more accurate than the generic sticker and is highly scalable.

Who’s Behind MyCarma:

MyCarma has been developed by CrossChasm US Inc. and CrossChasm Technologies Inc.. CrossChasm was founded by graduates of the US Department of Energy (US DOE) Advanced Vehicle Technology Competitions (AVTC), specifically ChallengeX. As CrossChasm has grown, the vast majority of the new team members have been graduates of ChallengeX and the subsequent AVTCs, namely EcoCAR and EcoCAR2.

Thank you very much for your time and consideration!

Contact us at to be notified when the iPhone and BlackBerry versions are released.

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