We spent 26 hours on research, videography, and editing, to review the top choices for this wiki. OBD2 scanners make it simple for anybody to diagnose a vehicle’s problems, even people who have no mechanical knowledge whatsoever. Simply plug it in, connect it to an app on your iPhone, and it will give you a readout of any faults your car is experiencing. We’ve included both Bluetooth and Wi-Fi models to suit every need. When users buy our independently chosen editorial picks, we may earn commissions to support our work.
10. Mestart RS12
The Mestart RS12 can be used to check your emissions system so you know if you’ll pass the test before heading to the mechanic and spending any money. While it is relatively simple to use and doesn’t cost much, it should be noted that it loses its connection at times.
- Comes with supporting software
- Not suitable for data logging
- Pairing can be problematic
| Brand | Mestart |
|---|---|
| Model | pending |
| Weight | 0.6 ounces |
| Rating | 4.0 / 5.0 |
9. Vgate iCar Pro
The Vgate iCar Pro can read, delete, and reset both generic and manufacturer-specific codes on a range of cars built within the last 20 years. It features auto sleep and wake functions, so it won’t drain your battery, but will be ready to use when you need it.
- Supports the elm327 command set
- Transmits data quickly
- Instructions are poorly written
| Brand | Vgate |
|---|---|
| Model | pending |
| Weight | 2.1 ounces |
| Rating | 4.0 / 5.0 |
8. PLX Devices Kiwi 3
At first glance, the PLX Devices Kiwi 3 may seem a bit overpriced, but it offers some unique functionality not found in many others, like GPS mapping, Instaconnect technology, and driving behavior efficiency reports. Plus, its compatible with Windows, Android, and iOS.
- On-unit status indicators
- Can be left plugged in at all times
- App must be purchased separately
| Brand | PLX Devices |
|---|---|
| Model | kiwi3 |
| Weight | 2.1 ounces |
| Rating | 4.0 / 5.0 |
7. LELink Low Energy
The LELink Low Energy has very sturdy connector pins, ensuring it will last through years of use. It can be configured to automatically power off or enter a standby mode, so even if you accidentally leave it plugged in, it shouldn’t drain your battery.
- Can display live vehicle information
- Data log function
- Comes with a 24-month warranty
| Brand | LELink |
|---|---|
| Model | FBA_QJRYMFC |
| Weight | 0.6 ounces |
| Rating | 4.0 / 5.0 |
6. Carista Adapter
You can save some time with the Carista Adapter because it not only gives error codes, but displays their meaning as well so you won’t have to look them up. The price for the device is low, but it requires a paid app subscription to access the advanced features.
- Lets you customize a car’s settings
- Can check abs and airbag systems
- Intuitive user interface
| Brand | Carista |
|---|---|
| Model | COBD-BT24 |
| Weight | 1.6 ounces |
| Rating | 4.0 / 5.0 |
5. BAFX Products 1278
The BAFX Products 1278 works with all OBD2 protocols, even J1850 and CAN, which many other models struggle with. It is capable of checking a number of vehicle diagnostics, including fuel-to-air ratio, O2 sensor status, and more.
- Detects emissions test readiness
- Displays code readouts quickly
- Us-based support
| Brand | BAFX Products |
|---|---|
| Model | pending |
| Weight | 3.2 ounces |
| Rating | 4.0 / 5.0 |
4. Veepeak Mini
While it may not have its own app, the budget-friendly Veepeak Mini works with a variety of third-party software, many of which are available for free. It’s a compact option that is convenient to store in the glovebox, and it comes with a 12-month warranty.
- Can monitor your fuel efficiency
- Clear and concise instructions
- Must be disconnected after use
| Brand | Veepeak |
|---|---|
| Model | VP01 |
| Weight | 0.3 ounces |
| Rating | 4.0 / 5.0 |
3. Fixd Active Car Health Monitor
The application included with the Fixd Active Car Health Monitor can be simultaneously linked to multiple scanners, allowing you to monitor the status of all of your family’s vehicles. It can also be set to give you scheduled maintenance and oil change alerts.
- Tells the severity of any issues
- Explains problems in plain english
- Provides repair price estimates
| Brand | FIXD |
|---|---|
| Model | 2 |
| Weight | 1.6 ounces |
| Rating | 4.0 / 5.0 |
2. Foseal Scan Tool
The Foseal Scan Tool can monitor a variety of engine data, including RPM, coolant temp, intake manifold pressure, and more, and display it in real time on your iOS device. Plus, just in case you decide to switch phones in the future, it is also compatible with Androids.
- Can reset most error codes
- Power on indicator light
- Connects via wi-fi
| Brand | Foseal |
|---|---|
| Model | Foseal |
| Weight | 2.4 ounces |
| Rating | 4.0 / 5.0 |
1. Lemur Vehicle Monitors Bluedriver
The Lemur Vehicle Monitors Bluedriver is no joke when it comes to diagnosing practically any vehicle problem imaginable. When paired with its dedicated app, it offers all of the capabilities of a bulky handheld device, and even displays suggested fixes.
- Gives more info than other models
- Provides a maintenance schedule
- Freeze frame data snapshots
| Brand | Lemur Vehicle Monitors |
|---|---|
| Model | LSB2 |
| Weight | 2.4 ounces |
| Rating | 4.0 / 5.0 |