EcoDrive OBD: an eco-driving score that accounts for the slope

An Android app that reads your car's real fuel consumption through a Bluetooth OBD-II dongle, and scores eco-driving while taking the slope into account.

Code on GitHub

OBD measurement methods, depending on what the car exposes

The idea

Eco-driving apps punish climbing and reward descending. EcoDrive compares real consumption with what a physical model (mass, rolling resistance, aerodynamics) predicts for the current speed and slope. Climbing a hill isn't penalised; accelerating downhill is.

What it does

Instant and average consumption (L/100 km, L/h when idle)
Altitude from the phone's barometer or the Open-Meteo terrain model
Trip curve coloured by score
Map of over-consumption by road
Anonymous leaderboard by road segment and car model (community data simulated for now)
Trip kept as long as the engine runs
Auto-start on Bluetooth connection
Android Auto