ACECAR Head Up Display Car Universal Dual System 3.5 Inches HUD, Speedometer OBD2 GPS Interface, Speed, Engine RPM, OverSpeed Warning, Mileage Measurement, Water Temperature, GPS Mode for All Vehicle

Loved the HUD. This is the closest to OEM that you’re going to see. I read a lot of the reviews stating that they had to calibrate the device after plugging it in. I can’t say that I had to do anything. I used the OBD2 port to wire the device and ran the wire through the A pillar and down the door frame and installation took all of 3-5 minutes. The trick is to place the device around until you get the desired projection, mark it and then stick with the given sticky pad. It hasn’t moved, and I even have it placed in such a manner that it’s near impossible for myself or the passenger to see that there’s even a device there. Everyone that’s seen it so far has asked me if the car came with it. Read the instructions, and I can’t stress that enough. If you just plug this in with the USB cable, you’re going to have a hard time calibrating this to read accurate speeds. As for the display itself, I think less is always more. You aren’t going to find an after party HUD that looks like something built with the vehicle due to the messiness of information and lack of it being built into the dash panel. This is great. Reads speed, and even shows a freakishly accurate rev counter. Try it out, you won’t be disappointed.

Posting this after using it for more than 6 months—no issues so far. It works just like a factory-installed system. Occasionally, the mileage shown on the heads-up display is slightly off (±2 miles), but that doesn’t bother me since I can still track my speed easily. I do wish it could display the road’s speed limit, so I wouldn’t have to look down at the dashboard for reference. Even a simple color indicator (like blue or red when exceeding the limit) would be helpful. That said, I understand this feature isn’t supported by the device. Overall, it meets the expectations I had when I purchased it, as i knew what is supported and what not.

Very clear and easy to see even in the sun. It's only as accurate as your car's ECU is reporting but offers settings to offset the value- out of the box, mine was right in line with the speedo. There's also the GPS mode but that's unlikely to agree with the speedo (GPS is actually more accurate). The USB cable that plugs into the ODB port is plenty long and the grippy dashboard pad does its job (and isn't actually adhesive, which is nice for repositioning the unit). There are a good amount of settings to play with. One I'd like to see is to use Throttle Position or electric motor power output instead of RPM, because I have a plug-in hybrid and the gas engine isn't always on. My major gripe about this product is actually something I'm surprised other reviewers aren't mentioning. There's no cowl facing the front of the vehicle so everyone, including the popo, can see your speed lit up like a christmas tree on your dashboard. In vehicles with factory HUDs, the display is recessed into the dashboard to prevent this but obviously that can't happen here. I made my own cowl with black electrical tape and there seems to be no issue, though I may 3D print a better solution because I'm sure it won't last. I also had the issue with the unit causing DTCs. I'm not sure what triggered it, but I plugged it in and the unit showed only the voltage. Then I turned the car on and got tons of errors popping up on the car's screen. Cleared them with another ODB scanner and they haven't gone back- I'm sure it messed with the CAN bus somehow and confused a bunch of modules, but that's a risk with anything ODB. I'm hoping it was a fluke and with regular use I won't see that again.

**Started Strong, Ended in Disappointment** I was initially impressed with this heads-up display (HUD) when I first installed it in my car. Setup was straightforward, the display was crisp and easy to read, and it added a sleek, futuristic touch to my dashboard. For the first few weeks, everything worked flawlessly—it projected speed clearly, and made driving feel safer and more high-tech. Unfortunately, that honeymoon period didn’t last. After a few months, the display started glitching—flickering, freezing, and occasionally shutting off mid-drive. I tried checking all the connections, but the issues only got worse. Now, it won’t even power on. It’s essentially a very expensive paperweight sitting on my dash. For a product that showed so much promise, the lack of durability and reliability is a major letdown. I can’t recommend this HUD unless the manufacturer seriously improves quality control and support.

The display is neat and definitely adds that wow factor to any car, it ended up going in my friends car though, because after trying it in my Z4, the speedometer portion did not work, everything else worked flawlessly. I contacted the seller and of course they recommended that I use it in GPS only mode [ I hate this suggestion so much because it removes most of the functionality of the device like water temp and RPM, and they really don't seem to care. Oh and forget about the after service department what a joke.] which I did not want to use. Some finer details: 1)The sample and update rate is too low, I get the same rates using a Bluetooth OBD2 module with a tablet. Guess nothing beats OBD2 to PC interface which is almost instant like real gauges. 2)THROW THE ADHESIVES AWAY!!! buy you some 3M 468 MP or equivalent and it will stick really well and be heat resistant. 3)The display is really nice and shows up well at night/day, outstanding job here.

I recently got this little GPS Head-Up Display (HUD), and it's exactly what I wanted for keeping things simple while driving. It's designed to provide just the right amount of information without being overwhelming, which really helps keep my focus on the road. The display shows your speed and RPMs, with the RPMs cleverly indicated by a color display at the bottom. This streamlined approach means less visual clutter and more clarity. It hooks up to your car easily. While it does require a bit of adjusting to set the speed accurately, the process itself is straightforward and easy to use. This HUD is perfect for anyone looking for a no-fuss, safe way to keep an eye on essential driving metrics.

It does the job pretty well I am happy with it. I can see it on the screen in the dark and in daylight with the sun out. I was able to mostly tuck the wires into the side so it's not very visible following along the left side of my dash down by the windshield then up to the side of it and down to the little plug-in. the only drawback was the instructions were not very clear and the English translation was a bit tricky to decipher. you have to push a few buttons to get to a certain mode or whatever the you want it to show which for me was just miles per hour and I ended up having to just mess with it a bunch in till finally it showed me what I wanted and had to convert it to mph. Once I got it there I have no other reason to push the buttons though so I stuck it on the dash and it's awesome. It turns itself off after the car turns off which is nice too. I have my plug into the OBD2 reader you can do this through the other like cigarette lighter thing you know whatever but this is much cleaner and doesn't stick out or have cords and things you got to flip

I bought my son a 2005 Nissan Pathfinder and he had asked for a heads up display to see the speed since the Pathfinder had analog gauges. The 2005 has OBD2 and didn't think I would have any issues. I go and plug the unit in and it powers up and I try to get it set to MPH but it will not get off volts and after 30 seconds it restarts. I read the troubleshooting guide and that says if that happens its not an OBD2 and it wiull not work. I test it in my 16 GTI and it works perfectly and after 1 second it auto goes to MPH and the tach works also. I'm not sure why the deal is with the connection to the Pathfinder. I spent about 45 min trying to get this to work using the OBD2 port and then tried using the USB and satellite function and still had issues. Its too bad, the unit looked great and super bright in the daytime. I gave it 2 stars since it did work in my GTI but was supposed to work with any OBD2 port which is not the case.

Very simple to connect. The display is pretty easy to read in most conditions - a bit too bright for night driving sometimes. Had to adjust the speed ratio to get it to match the car but no big drama. Speed display tends to lag a bit but is only annoying in city traffic and is very usable on the highway.

It really does work well, take a little to set up, however it caused my vehicle tracker connected to the same old to malfunction, in go’s mode it is slow to keep up with changes in speed.

I had to finetune it for the correct speed and now it's working great. It's less visible but still can see it in the day, and at night it's perfect. It took a couple of tries to put the mirror sticker on the windshield so I was left with bubbles. Contacted sellees but they were not able to send replacement, but made up for it a bit. Overall I'm happy - I wish I could see it more clearly in the day and that it would come with multiple stickers. Also to have it positioned in the right place for me, the wire has to be out and visible and in my Camry, that means blocking the car clock q bit.

Initially, I was not really impressed with this and I was contemplating requesting a RETURN and Refund. The main issue was that unit ships in a state which will NOT auto power down! The base unit itself would remain lit and the backlighting of my 2018 Sport Night Edition, 6-gauge dash cluster with 7” LCD central info screen would stay ON !!... This was indefinite and would of course be a Battery KILLER! The supplied “leaflet” has poorly worded instructions in a barely readable tiny type font! and using the all-in-one single button/Jog dial for altering the unit's settings feels counter intuitive. After a lengthy and rather frustrating trial and error set-up period I was able to FINALLY get it right. This will (for RAM Classic owners) require you to get to menu item #9 and set voltage to 13.2 volts) Once you have managed to navigate this convoluted process your unit will Auto off when your dash cluster cycles through the vehicle shutdown process. Ok, after that long bit of frustration aside.. The “POSITIVES”... - Did not cause any info anomalies on the Ram Classic dash cluster and did not throw any OBD error codes! - Base Unit is fairly unobtrusive and neatly nestles onto the first ridge in the upper dash of the Ram “Classic” just behind where the VIN plate is located. For me, this location also provided what I felt was the optimal projected image unto the windshield. This location also allows for the complete concealment of the connected cabling. - Speed and Info appears to display accurately which should be expected since its just pulling OBD info. - Projected image seems bright enough in sunlight and auto adjusts as conditions darken. - For the money (once the set-up is sorted out) this is a decent, functioning useful piece of gear. The “NEGATIVES”... - There is a slight “double-image” in the glass. No amount of repositioning of the base unit will eliminate this as its an issue of simple physics! (Ie: Windshield safety glass construction) However, I have not made use of the supplied screen reflector yet. I am trying to avoid affixing anything to my glass at this point. - TERRIBLE instructions! A little bit more detail may have taken 1 hour of frustration out of the process. I was almost at the point of wanting to call Amazon to request a refund! In the end, this was almost exactly what I was hoping for! I had been used to having a HUD in some of my prior vehicles and I missed having one. This unit allows me to leave my LCD cluster in the “Fuel Eco.” Screen or “Tire Pressure” Screen while projecting my Speed into the windshield glass. I set the unit to be as clean as possible by showing SPEED ONLY.. (No bar graph or useless dots) I have to say that this thing is fantastic during night driving. After getting the unit to now properly power down I am going to up my rating to 4* where it would have been 1* (ZERO) if I had ended up returning it. At some point I may try using the supplied transparent reflector screen to see if it cleans up the image a bit and will report back if I think it affects my rating. For now, the image is acceptable to me. Sorry for the LONG RAMBLE, but I hope it will help 2013-2019 RAM "Classic" owners to get the most out of this product. One final note: I did not attempt to use this in the USB powered mode at all and can offer zero input as to trying to use this in that way. As far as I am concerned, the whole point of having one of these is that it can function and gets its required power simply by connecting directly to the OBD port.

Everyone should stay away from this. The speed displayed by the heads up display was not correct (about 5-10km/h off). The main malfunction I experienced was a multitude of error codes when my mechanic preforms an electrical systems diagnostic caused by a short in the port this device was plugged to. I will be contacting the company for support and returning.