Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

Winner
The FOXWELL NT301 OBD2 Scanner serves as a solid tool for both home and professional mechanics. It offers a comprehensive range of diagnostic functions like reading DTCs (Diagnostic Trouble Codes), checking I/M readiness status, and accessing live sensor data. This makes it particularly useful for diagnosing and fixing Check Engine Light issues. The compatibility is extensive, covering most worldwide cars, SUVs, light trucks, and 12V diesels, although it has limitations with some specific brands like Fiat, Alfa Romeo, and certain French and Korean models. Always check vehicle compatibility before purchasing to avoid issues.
The user interface is user-friendly, featuring a 2.8-inch color screen and straightforward hotkeys for essential functions, which can be very convenient for quick diagnostics. However, the device is not compatible with Mac or iOS systems, limiting its versatility if you use those platforms. Connectivity is straightforward via the 16-pin DLC in your vehicle, and it does not require a battery, which is a plus. For software updates, it supports Windows XP/7/8/10, but again, no Mac or iOS support.
The live data streaming and data logging capabilities are robust, allowing for real-time monitoring and troubleshooting of engine problems. It is noteworthy that the device only reads engine system codes and doesn't support ABS or SRS, which could be a drawback for those looking for more comprehensive vehicle diagnostics. The NT301 also comes with a 1-year warranty. However, if you need a broader range of diagnostics beyond the engine system, you might need to look for other options.
The FOXWELL NT604 Elite OBD2 Scanner is designed for car owners who want to diagnose and troubleshoot common system issues like ABS, SRS, engine, and transmission. One of its strengths is its ease of use, as it comes with the latest software pre-installed, eliminating the need for initial downloads. It offers a wide range of diagnostic functions, including live data streaming, which can help users monitor their vehicle's health in real-time. Additionally, the built-in DTC library is useful for understanding diagnostic trouble codes without needing external references.
The scanner supports over 60 car makes from different regions, making it highly versatile. Another notable feature is the AUTOVIN function, which quickly retrieves vehicle information, saving users time and effort. The device is housed in a solid protective case, offering better durability compared to competing products that come with plastic bags. Lifetime software updates are included at no extra cost, ensuring the scanner remains current with the latest diagnostic capabilities.
On the downside, the NT604 Elite does not support maintenance functions such as EPB reset, ABS bleeding, oil light reset, or battery reset programming, which could limit its usefulness for some users. Additionally, the compatibility of diagnostic functions can vary depending on the car make and model, so potential buyers should verify coverage before purchasing. Despite these limitations, the NT604 Elite provides substantial value with its comprehensive diagnostic features and user-friendly design, particularly for those looking to avoid frequent trips to the dealership.
The FOXWELL HD500 is a specialized OBD2 scanner designed primarily for heavy-duty diesel trucks from brands like Cummins, Caterpillar, Detroit, and more. Its standout feature is advanced DPF (Diesel Particulate Filter) service functions, including regeneration and status monitoring, which helps maintain engine health and fuel efficiency. The scanner also offers a professional cylinder cut-off test, useful for identifying cylinder or injector problems—ideal for mechanics or experienced users working on diesel engines.
It supports multiple key diagnostic areas such as Engine, ABS, SRS, and more, covering a wide range of trucks, buses, and construction vehicles with various diagnostic protocols. Connectivity is straightforward with included adapters, and the device runs on Android 9.0, providing a familiar interface and ease of use. The lifetime free software updates ensure it stays current with new vehicle models, while 24/7 tech support offers assistance when needed.
Some advanced functions like Allison transmission diagnostics and VGT calibration are not supported, and speed limit reset is only available on select models, so it is important to check vehicle compatibility before buying. The HD500 is slightly heavier than some handheld scanners, which might affect portability, but its robust functionality makes it a practical choice for professional use and serious DIYers who want a reliable, all-in-one diagnostic tool for heavy-duty trucks.
Most Popular Categories Right Now