Garmin Mechanic with ecoRoute HD

Track engine diagnostics and fuel efficiency with your compatible nüvi® navigator or Android™ smartphone

Item #: 150MECH

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Ideal for gearheads
Do you love to tinker with your car in the name of better performance? Are you looking for a convenient way to track how your vehicle responds while you're driving? Garmin's got a great solution in the Mechanic with ecoRoute HD — simply pair this vehicle diagnostic monitor with your Android smartphone or nüvi portable navigator for instant access to important specs that can help you get more from every trip.

Easy to install and use
The Mechanic with ecoRoute HD plugs directly into your car's OBDII port, usually found below the driver's side dashboard, to access a large amount of real-time info about your vehicle's performance — the same data that professional mechanics use to diagnose problems with your vehicle. The device then relays the information via wireless Bluetooth® connection to your nüvi, which then displays your vehicle's performance on easy-to-follow gauges and charts. The Bluetooth connection with the Mechanic with ecoRoute HD does not affect your nüvi's ability to make or receive calls with your compatible cell phone.

If you have an Android smartphone, you can download the free Garmin Mechanic app (available from the Android Market), and enjoy access to the same information on your smartphone via its Bluetooth connection.

Gauges galore
Depending on your vehicle and whether you're running through a nüvi or smartphone, you'll view real-time gauges for RPM, air/fuel mixture, oil pressure, oil temperature, coolant temperature, air flow, fuel flow, air pressure, and more. You can even customize the gauges to fit your preferences.

Reduce costly visits to the mechanic
If you've been frustrated by your car's "check engine" light in the past, you'll be glad to know that the Garmin Mechanic gives you clear explanations for what's wrong with your vehicle whenever the light comes on. You can even reset the check engine light through the system, saving you the time and money to have a professional do it.

In addition, the Mechanic with ecoRoute HD monitors intake air temperature, throttle position, emissions, battery charging status, and other vital engine performance parameters. You can keep tabs on your engine engine's performance, so you can make adjustments for peak efficiency or take it in for maintenance when needed.

More accurate data so you can drive smarter
The ecoRoute HD feature also tracks your fuel usage and gas mileage, so you can check out your estimated fuel economy, carbon footprint, and fuel cost for each trip. By measuring your engine's performance and fuel consumption over time, you'll find the areas where you're driving less efficiently along your commute. You can use this data to choose more Earth-friendly routes around town — not only will you help the environment, but you'll save some money as well. You can also use the Mechanic with ecoRoute HD as a trip computer on long treks — it'll give you real-time updates on your journey's progress, including average speed and fuel use.

Note: Your Garmin nüvi navigator must have Bluetooth compatibility to work with the ecoRoute HD.

Product Highlights:

  • vehicle diagnostic tool
  • downloads data through vehicle OBDII port
  • displays results on a compatible Bluetooth enabled nüvi navigator or Android smartphone with free Garmin Mechanic app
  • gives detailed real-time information on fuel economy and engine diagnostics
  • provides check engine light error messages and can be used to reset check engine light
  • can be used as a trip computer
  • provides mileage reports, calculates fuel savings, and challenges drivers to improve their "green" driving habits
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research

What's in the box?

Download owner's manual

  • Mechanic ecoRoute HD module (with attached OBD II connector)
  • 4 Wire-ties
  • 2 Sections of two-side tape
  • Instructions
  • "Warning" label (attached to module)

Product Research


Overview: The Garmin Mechanic with ecoRoute HD transforms your Bluetooth compatible nuvi GPS device or Android smartphone into a real-time automotive diagnostic computer. By connecting to your vehicle's diagnostic system, the ecoRoute HD monitors vehicle performance and provides detailed system data; including engine monitoring, sensor and gauge data, fuel efficiency, engine diagnostics, and more.

Garmin nuvi GPS Compatibility: The Garmin Mechanic with ecoRoute HD is compatible with 1200 series and higher Bluetooth capable Garmin nuvi devices. Simply plug the ecoRoute HD module into your vehicle's standardized onboard diagnostics port (OBD II), then complete the easy one-time pairing between the ecoRoute HD and the Bluetooth-enabled Garmin nuvi GPS device.

Note: Before installing the ecoRoute HD module, you must update your Garmin nuvi GPS device's software. Visit the Garmin WebUpdater for the latest updates & downloads.

Garmin Mechanic App: Add the Garmin Mechanic app to your Bluetooth-enabled Android smartphone and ecoRoute HD can show real time engine performance data on your smartphone. Simply plug the ecoRoute HD module into your vehicle's standardized onboard diagnostics port (OBD II) and download the free Garmin Mechanic app from the Android Market onto your compatible Android smartphone. Follow the on-screen prompts to pair the ecoRoute HD with your Bluetooth-enabled Android smartphone.

Note: Requires smartphone with Android 2.1 and up.

Vehicle Compatibility: The Garmin Mechanic with ecoRoute HD is designed and tested to meet the OBD II specifications that are required on most 1996 and newer cars and light trucks sold in the United States. However, some vehicles may be incompatible with the Garmin ecoRoute HD. See Garmin's incompatible vehicles list for more information.

Note: Due to the large number of different vehicle models produced and mid-year manufacturer changes, this incompatibility list may not be complete.

OBD II Connector: The easy to install ecoRoute HD plugs into your vehicle's OBD II port to send accurate engine performance data wirelessly to a compatible Bluetooth-enabled Garmin nuvi GPS device or Android smartphone. This allows you to decode OBD II engine trouble codes and reset your vehicle's check engine light from your nuvi device or smartphone.

Gauges Page: The Garmin Mechanic with ecoRoute HD provides you with complete gauge cluster in one convenient location on your compatible nuvi GPS device or Android smartphone. The information displayed on the gauges page is collected directly from your vehicle. Gauges to monitor RPM, air/fuel mixture, oil pressure, oil temp, coolant temp, air flow, fuel flow,  and air pressure are available. You can select the gauges you want to monitor most and customize screens with various gauge packages. The number and type of gauges displayed may vary by vehicle.

Note: Air/fuel mixture, oil pressure, oil temp, and fuel flow gauges are only available using the Garmin Mechanic app on your compatible Android smartphone.

Diagnostic Check: With ecoRoute HD, you'll receive clear explanations as to what is wrong with your vehicle, and you even have the ability to reset your check engine light, saving you time and money spent at the repair shop. After completing a simple installation, you can run diagnostic testing on vehicle systems, such as the battery and drive train, to receive engine performance data and more than 4,000 error codes.

Fuel Economy: You can use the data from ecoRoute HD to actually help you improve your driving habits and get more miles to the tank using timely fuel and mileage reports featuring accurate fuel consumption/conservation data. Calculate your fuel efficiency, carbon footprint and more all through your compatible Garmin nuvi GPS device or Android smartphone.

LED Status: The two LEDs (green & blue) on top of the ecoRoute HD module indicate the connection status.

LED Indication
3 Green Flashes Establishing a connection with vehicle and GPS device (Setup Mode)
Slow Green Flashing Connecting to the vehicle.
Green Solid Communicating with the vehicle.
Blue Flashing Connecting to the GPS device.
Blue Solid Communicating with the GPS device.
Two Flashes Update mode.
Alternating 3 Green/3 Blue Flashes Fault mode.

Installation Warning: When installing the device in a vehicle, install the device securely so it does not interfere with the vehicle operating controls, such as the foot pedals, or the driver's feet. Interference with the vehicle operating controls or feet can result in an accident, which could result in injury or death.

Vehicle Warranty Note: Defer to your vehicle's warranty provisions and owner's instructions for guidance on whether any OBD II connector product might void or alter your vehicle's warranty.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Garmin Mechanic with ecoRoute™ HD Reviews

Average Customer Review:

7 reviews
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Some what satisfied

Written By Anonymous, Charlottesville, VA on Monday, September 08, 2014

I bought this product so I could use it to see if my car has any issue. The product was easy to install, but it was not easy to find a spot for it to be taped or velcro, zip tied to.

Pros: The product showed what I need to know and was able to show me gauges info from my vehicle.

Cons: - Pairing the device was not easy and I was not able to use with the Garmin garage with it, since I have feeling it only allow one paired device at a time. - There was not enough gauges to display - One time device pairing

Garmin Mechanic with ecoRoute

Written By Eagle, Fayetteville,TN on Friday, March 28, 2014

Crutchfield Customer Review (What's this?)

This is one great product for those who want to keep a check on ALL engine performance items. I mean all , from eng temp , rpms , air intake temp, timing advance, and a bunch more. Highly recommended, and the service from Crutchfield was awesome. Fast shipping, and a heck of a lot lower price than straight from Garmin.

Pros: see review

Cons: None

Fussy but useful

Written By Dan, Sun Prairie, WI on Monday, April 29, 2013

Crutchfield Customer Review (What's this?)

The real-time info is very useful. However, the start-up procedure is very time-consuming, finicky and annoying. It will not properly connect unless I turn-on the Garmin first, then initiate the app, then wait at least 30 seconds before starting my car; then, most of the the time it will do it's job after yet another 30-seconds or so of waiting. I also find it cumbersome switching between the ecoROUTE app and the map as it requires stepping through several menu-picks or hitting the back button several times to switch between the two modes. The instructions for use seemed a bit limited as well. I still don't quite understand the bar graph display. Clicking on it toggles between 10-minute, 1-hour, and multi-hour (accumulated) performance display. But, the mpg range on the graph seems to change in value from time to time. The graph also seems to be in error much of the time. -that is, the lines don't accurately record history. This is most noticeable on the 10-minute view. Quite often it will show periods of 0-20 mpg, when in reality I was consistently over 40 mpg. I use it mainly for real-time mpg display, which has proven itself very accurate and an extremely useful tool for maximizing and developing good gas-mileage habits. The ecoROUTE app scoring is pretty useless info to me. The engine gauges are awesome, and give me feedback (like coolant temp) that I don't normally have. I works well for what I need it for, but the start-up procedure is very frustrating.

Pros: accurate real-time mpg feedback, engine gauges

Cons: cumbersome start-up and initiation of connection, inaccurate graphing, multiple steps to switch to other modes (like View Map)

Cool Upgrade

Written By Brian, Iowa on Monday, December 17, 2012

Crutchfield Customer Review (What's this?)

The ecoroute HD was instantly recognized by my garmin (2595lmt) via bluetooth and have had no issues since installation. The guages are a very cool, neat feature for the gearhead/car lover. I have tried to improve my MPG fuel economy based on the instant information presented to me via the HD receiver (i.e. I notice my chronic "lead foot/ hard breaking more than ever) and think I saving a little money...too soon to create a real pattern. I have not viewd any codes yet but it provides some peace-of-mind knowing I have the option to view/reset should any trouble codes arrive on my '06 subaru baja. Overall, I am happy I purchased it and continue to discover cool new features of the device....GOOD bargin @ crutchfield too!

Pros: Easy installation, cool instant vehicle information.

Cons: None

Great product!

Written By Airforcejohn, Sarasota, FL on Monday, June 04, 2012

First, this product is "connected" via the wireless Bluetooth availability on the top-of-the line Garmin GPS systems or the Kenwood Navigation systems (their GPS is made by Garmin). Simple plug your ecoRouteT HD unit into your vehicle's standardized onboard diagnostics port (OBD II). Turn on your car, follow the directions provided to link up with your Garmin unit. Make sure your plug is securely pushed in all the way into the port and look for the blinking green lights -- indicating the unit is ready to connect to your Garmin GPS usit/Kenwood head unit. Be patient, it takes about 2 to 3 minutes to recognize the ecoRoute HD. Once it is connected, the blilnking green lights turns to a solid blue LED light and you have wonderfully useful information -- that's really cool! Remember to "touch" each gauge on the screen to modify the information. Have fun and enjoy driving more economically!

Pros: Very easy to connect -- plug in, stick on anywhere under the dash. If needed, long plastic ties are included.

Cons: The supplied double-sided adhesive tape to attach the ecoRoute HD to the surface of the front of your dash (near your knees) is a weak adhesive. If it does not adhere to your plastic dash, replace the original tape with 3M VHB "Supermount Tape" found at hardware stores and Radio Shack. It's made for "Hi-temp/Hi-strength."

Crutchfield response on Wednesday, September 05, 2012 We contacted Garmin about Kenwood compatibility with this accessory. Garmin stated that this unit is not compatible with any Kenwood head units.

Reset Check Engine Light

Written By Tom, Florida on Saturday, April 21, 2012

It is great to know that the ecoRoute HD diagnostic tool can reset your check engine light. But, it's another thing to know how!

I'm using my ecoRoute HD with my Garmin Nuvi 3790LMT GPS. The check-engine light has been illuminated on my 2006 Chrysler Pacifica for about 2-weeks now, but engine performance has been normal. I got the ecoRoute to pair with my GPS with relative ease. The OBD-II code displayed by the device was P0456 (Evap System Small Leak). I learned that the device might not reset the error code with the engine running. So, with the error code displayed on my GPS, I shut the engine down and turned the ignition key to the "On" position. I got the error code to reset by only using the GPS. I touched the screen where the error code was displayed, and another screen appeared with menu options that included "Reset" and "Cancel." I selected "Reset" and the light blinked and went out. The instructions in the Owner's manual entitled "Turning on ecoRoute Without Starting Your Car" appear to explain how to reset the code, but are completely misleading. Step-2 says "Press and release Reset." There is a reset button on the ecoRoute device, but it is only used to reset the vehicle profile you entered for your particular vehicle, or to reset the device to factory defaults. The reset option displayed on my GPS screen did the job! Hope this helps.

Pros: Does what it says it will do. Provides good information about your vehicle, and resets the check-engine light.

Cons: Owner's manual is very weak and could be more helpful!


Written By Luis, Waxahachie, TX on Friday, March 30, 2012

Crutchfield Customer Review (What's this?)

Very happy with product and service, most of all Crutchfield remembered that I purchased before three years ago, that is excellent service.

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