Car Head Up Display – A8 5.5″ OBDII HUD – Review and Install – GearBest


A8 5.5 inch OBD II Car HUD Head Up Display Windscreen Projector

Gearbest Link:

Main Features:
1. Plug and play, HUD can automatically adapt to vehicle type with OBDII.
2. Overspeed reminder, the icon of overspeed will flicker and alarm when the vehicle exceeds the speed limit set
3. Fatigue driving alarm, after driving for 4 hours, the fatigue driving indicator light will flash to remind the driver to have a rest.
4. Automatic adjustment of luminance, brightness can be changed with change in outside brightness
5. Multi-functional display: RPM, water temperature, battery voltage, and fuel consumption.
6. Real-time one hundred kilometer / instantaneous fuel consumption
7. Engine speed alarm

User Manual:


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31 Replies to “Car Head Up Display – A8 5.5″ OBDII HUD – Review and Install – GearBest”

  1. It's a very cute idea; but with the loose cable and all the peripheral reflections on the display glass; it all comes off as kind of slovenly ! / i kept hoping that the instructions would allow the user to embed the unit into the dash, and hide the cable inside the dash console ? so that it looked much more integrated as a final presentation device ? ( ? )

  2. Great instructional video. I bought the unit and installed it with no problems. My only concern is that the unit will not turn off automatically when I turn off the ignition. It displays the "HUD" logo and battery status and seems to be in "scan" mode. Is there a way to reprogram this function so that it will turn off once the ignition is turned off? Thanks for your help!!

  3. help! my unit turns on, but it gives me a buzz, something about the rotational speed. I tried driving, but nothing happens. the units on my screen doesn't change.

  4. Is it just me or does this look like a ticket waiting to happen? If I am driving a the police see this light on my windshield especially at night, its "you got some 'plaining to do Lucy"

  5. Great video, first i need to get the paper, suit, pass interview, cash check ( check cashing ) apply for credit card, wait for the approval, buy a car – then go on ebay and purchase this thing. thankyou. getting started with item 1.

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