--- product_id: 117973131 title: "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" brand: "acecar" price: "FREE" currency: PLN in_stock: false reviews_count: 13 url: https://www.desertcart.pl/products/117973131-acecar-head-up-display-car-universal-dual-system-3-5 store_origin: PL region: Poland --- # OBD2/GPS Dual System 3.5" Display Real-time Data 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 **Brand:** acecar **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > 🚀 Elevate Your Drive with Smart Tech! ## Quick Answers - **What is this?** 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 by acecar - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/117973131-acecar-head-up-display-car-universal-dual-system-3-5) ## Best For - acecar enthusiasts ## Why This Product - Trusted acecar brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety Meets Style:** Drive confidently with real-time data projected directly onto your windshield. - • **Plug & Play Convenience:** Easily compatible with 95% of vehicles—just plug it in and go! - • **Stay Ahead of the Curve:** Experience cutting-edge technology with a 3.5-inch HUD that keeps your eyes on the road. - • **Multi-Function Monitoring:** Track speed, RPM, water temperature, and more—all in one sleek display. - • **Smart Brightness Adjustment:** Automatic brightness control adapts to your environment for optimal visibility. ## Overview The ACECAR Head Up Display (HUD) is a versatile 3.5-inch device that projects essential driving data onto your windshield, enhancing safety and convenience. Compatible with OBD2 and GPS systems, it provides real-time information such as speed, engine RPM, and water temperature, making it an essential tool for modern drivers. With features like automatic brightness adjustment and multi-function monitoring, this HUD is designed for ease of use and maximum functionality. ## Description Buy 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: Speedometers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Less is more, always. Very nice product. - 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. Review: Great product- value for money - 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. ## Features - 🚙【What is HUD?】 Short for Head Up Display. It displays driving data on the front windshield such as speed,RPM,water temperature,voltage single mileage etc. HUD avoids the danger of drivers looking down at the dashboard. It ensures the safety of drivers because of watching the data on the car front window glass, and helps drivers to keep the best state on the way. A variety of operating interface modes and colors can be switched, It will bring more fun and Technological sense to you. - 🚙【Simple Display】Vehicle Speed + Engine RPM, HD Display, practical function, let you drive more comfortable for a long time. (plug and play -- Available for 95% car with an OBD2/ GPS interface) The Nano - Technology - High clearness projector, to eliminate unwanted reflections and can make the display information more sharper. The Automatic and manual brightness adjustment mode, and more easy to control the HUD. - 🚙【Multiple functions】: Ambient decorative lighting Engine RPM Fault code alarm Fatigue driving alarm .The Alarm icon Light sensor: HUD can automatically adjust the brightness "according to the environment .Speed unit: KM/H, MPH .Multi-function zone: speed,water temperature,battery voltage,driving distance Water temperature icon ,voltage icon. - 🚙【Compatible Attention】OBD2 mode is only available for most vehicles manufactured after 2008. GPS mode Perfect Suitable for All Vehicle. ( If your car is not compatible with OBD mode, please toggle the scroll wheel button to the left or right to switch to GPS mode within 5 seconds after the HUD is turned on.)Dual System, OBD2 mode is not compatible with hybrid electric vehicle, diesel car, pickup truck, RV, computer modified car, it is recommended to use the GPS mode. - 🚙【QUALITY SERVICE】CE FCC RoHS Certification, Superior quality. The chip with powerful performance and compatibility to make sure dual system, dual-run memory and dual-core processor high-speed operat.If you have any questions about this product, please contact us. We will get back to you as soon as possible and help you solve the problem. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07NQ9LTGX | | Best Sellers Rank | #803,015 in Automotive ( See Top 100 in Automotive ) #511 in Automotive Speedometers | | Brand | ACECAR | | Brand Name | ACECAR | | Customer Reviews | 3.9 out of 5 stars 1,781 Reviews | | Item Dimensions | 35.43 x 21.26 x 4.72 inches | | Item dimensions L x W x H | 35.43 x 21.26 x 4.72 inches | | Manufacturer | WeiLai | | Material | Glass | | Material Type | Glass | | Model | M7 | | Number of Items | 1 | | Part Number | WeiLai-01 | | Thread Style | Obd2/Gps Cable | | Thread Type | Obd2/Gps Cable | | UPC | 749789252018 | | Unit Count | 1 Count | ## Product Details - **Brand:** ACECAR - **Item dimensions L x W x H:** 35.43 x 21.26 x 4.72 inches - **Material:** Glass - **Number of Items:** 1 - **Thread Type:** Obd2/Gps Cable ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/61Wxi-aE1qL.jpg) ![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 - Image 2](https://m.media-amazon.com/images/I/71-31VC8NAL.jpg) ![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 - Image 3](https://m.media-amazon.com/images/I/81eQw19ptrL.jpg) ![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 - Image 4](https://m.media-amazon.com/images/I/717+IYg71YL.jpg) ![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 - Image 5](https://m.media-amazon.com/images/I/71WSVmHXadL.jpg) ## Questions & Answers **Q: Will this device harm the car if obd is used while driving? ( will it switch ecu to diagnostic mode?)** A: I don’t know if it is related or not but after I tired it for a trip the engine sign switched on and didn’t turn off and I took the device off **Q: Hello my 1992 chevy silverado is obd1, do you guys make an obd1 to obd2 adapter?** A: Hello!I am so sorry!We can not make an obd1 to obd2 adapter. **Q: do i have to connect to car cigarette lighter or obd is okay?** A: Plug and play OBD only **Q: will it work with honda hrv 2021 ?** A: Not sure, it fit my 08 highlander thru onboard computer ## Customer Reviews ### ⭐⭐⭐⭐⭐ Less is more, always. Very nice product. *by A***I on September 10, 2024* 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. ### ⭐⭐⭐⭐⭐ Great product- value for money *by S***I on April 8, 2026* 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. ### ⭐⭐⭐⭐ Pretty good but room for improvement *by J***N on June 27, 2024* 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. ## Frequently Bought Together - 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 - bbfly-B6 OBD2 Splitter 16 Pin OBD II Splitter Extension 1x Male and 2X Female Extension Cable Adapter (1FT/30CM) (1Pack) - OBD2 Right Angle Splitter Y Cable Male Splitter to 2 Female Extension Cable 30cm/12 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/117973131-acecar-head-up-display-car-universal-dual-system-3-5](https://www.desertcart.pl/products/117973131-acecar-head-up-display-car-universal-dual-system-3-5) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-09-12*