A Long-Awaited Update

For quite some time, Android Auto users have noticed a puzzling discrepancy between the mobile version of Google Maps and the interface displayed on their vehicle's dashboard. While mobile users on Android and iOS, as well as those utilizing Apple CarPlay, have long enjoyed a live speedometer feature, the Android Auto version remained noticeably behind. This functional gap is finally closing, as Google begins to roll out the speedometer feature to its Android Auto users.


Rollout and Availability

According to information shared by users on platforms like Reddit, the update is currently reaching those enrolled in the Google Maps beta program. One Canadian user noted that they received the feature while running version 26.29.02.946673643. Much like its counterparts on other platforms, the interface displays the vehicle's current speed alongside the speed limit for the road being traveled. If the speed limit data is unavailable, the system simply defaults to showing the current speed of the vehicle.


Understanding Speed Calculation Differences

The addition of this feature brings Google Maps on par with Waze, which has offered similar functionality for years. However, users should remain aware of how different systems calculate speed:

  • Vehicle Speedometer: Typically measures tire rotation and often applies a slight adjustment, leading to an overestimation of speed by approximately 3% to 6%.
  • GPS-Based Speed: Apps like Google Maps and Waze determine speed based on the change in your geographical location over a specific timeframe.

«Google advises drivers to always prioritize the speedometer built into their vehicle's dashboard, as GPS-based readings can be influenced by signal interruptions or environmental factors such as tunnels, dense foliage, or urban areas with significant building density.»

Technical Limitations

While the addition is a welcome convenience for drivers wanting a quick reference for their velocity, it is important to remember that GPS data can be volatile. Signal obstructions in parking structures or heavily built-up city environments can impact accuracy. As the technology behind both Waze and Google Maps remains similar, these limitations apply to both services, making the physical dashboard instrument the most reliable source for speed data.