Garmin
Truck GPS
Garmin dēzl™ OTR820
An 8-inch dedicated truck GPS with custom truck routing, BirdsEye satellite arrival imagery, community truck-parking insights and Garmin’s connected trucking features.
Custom truck routing
Satellite arrival imagery
PrePass support
CAT Scale
Live services connection
Smartphone app
Smartphone app required
Yes
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Verified specs Last checked 2026-10-21
Best for
Drivers who want a larger display than Garmin’s 6- and 7-inch models without moving up to the oversized 10-inch OTR1020.
Main limitation
Live traffic, weather, fuel prices, community features and some trucking services depend on the dēzl app and a compatible smartphone.
Key specifications
| Brand | Garmin |
|---|---|
| Device type | Dedicated GPS |
| Built-in dash cam | No |
| Release year | 2024 |
| Screen size | 8 in |
| Screen resolution | 1280 x 800 |
| Dimensions | 7.87 × 4.92 × 0.79 in |
| Weight | 14.3 oz |
| Battery life | 2 hours |
| Wi-Fi | Yes |
| Bluetooth | Yes |
Truck navigation
Truck-specific routingYes
Truck height inputYes
Truck weight inputYes
Truck length inputYes
Truck width inputYes
Hazmat supportYes
Bridge height warningsYes
Weight limit warningsYes
Steep grade warningsYes
Weigh station alertsYes
Connected & trucker features
PrePass supportYes
CAT ScaleYes
Truck parkingYes
Satellite arrival imageryYes
Community loading docksYes
Live trafficYes
Live weatherYes
Map updates includedYes
Live fuel pricesYes