Unlocking your car’s hidden secrets doesn’t require a hefty mechanic bill. Modern vehicles are equipped with onboard computers that constantly monitor their health, and the key to accessing this wealth of information is an OBD-II scanner. These handy devices connect to your car’s computer, allowing you to read diagnostic trouble codes (DTCs), understand what’s causing that mysterious check engine light, and even monitor live engine data. While professional-grade scanners can cost a fortune, you don’t need to spend a lot to get a capable tool. In fact, there are excellent best OBD2 scanners for under 100 dollars that can empower you to diagnose car problems yourself, saving you time and money.
We’ve rigorously tested a wide range of OBD-II scanners, and we know which ones deliver performance and value without emptying your wallet. For budget-conscious car owners and DIY enthusiasts, finding the Best Obd2 Scanner For Under 100 is entirely achievable. Let’s dive into our top recommendations for the best OBD2 scanners under $100, highlighting options that provide essential features and reliable performance without exceeding your budget.
Here are some of the top OBD-II scanners that offer great value for under $100:
Innova 6100P OBD2 Scanner for overall car diagnostics under $100 consideration
Launch CR529 OBD2 Scanner as a best cheap OBD2 scanner option, definitively under $100
Ancel BD310 Dual-Purpose OBD2 Scanner, a versatile option that might be available under $100
What are the Best OBD-II Scanners Under $100?
When searching for the best OBD2 scanner for under 100, it’s important to prioritize essential features that provide real value without unnecessary frills. While some scanners offer advanced functionalities, for most car owners, a reliable scanner that accurately reads and clears codes, displays live data, and performs I/M readiness tests is sufficient. The good news is that many excellent scanners in the best OBD2 scanner for under 100 category deliver on these core requirements.
Best Overall OBD-II Scanner (Consideration for Under $100)
Innova 6100P menu display for user-friendly car diagnostics
1. Innova 6100P (Potentially Over $100, but Feature-Rich)
The Innova 6100P stands out as a feature-rich OBD-II scanner designed to empower users with professional-level diagnostics. While its price may sometimes exceed the $100 mark, it’s worth considering if you can find it on sale or if you’re willing to stretch your budget slightly for its advanced capabilities.
Our expert review:
Specifications:
- Display/size: Color/2.8 inches
- Bluetooth/handheld: Yes/Yes
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: 9
- Warranty: 1 year
- Size: 7.2 x 3.4 x 1.1 inches
- Weight: 6.5 ounces
Reasons to buy:
- Compact and portable design
- Resets battery and oil lights
- Offers both handheld and app-based diagnostics
- Provides repair instructions and parts information
Reasons to avoid:
- Text-based interface
- Keys require firm pressing
The Innova 6100P excels in making complex diagnostics accessible to users of all skill levels. Its intuitive operation and comprehensive features create a professional-like experience, even for those new to car maintenance. Setup is straightforward, and the scanner quickly connects to your car’s OBD port.
A standout feature of the Innova 6100P is its hybrid functionality, allowing you to use either the handheld scanner or the Innova companion app. The app includes a predictive maintenance feature that anticipates potential component failures, aiding in proactive car care. While the $120 price point might be a bit higher, the predictive tools, live data display, fault code reading, I/M readiness checks, and a long 72-inch cable provide substantial value.
Read our full Innova 6100P review.
Best Mobile OBD-II Scanner (Typically Over $100)
Topdon TopScan Bluetooth OBD2 scanner for mobile car diagnostics
2. Topdon TopScan (Usually Exceeds $100, Advanced Features)
The Topdon TopScan is a compact yet powerful Bluetooth OBD-II scanner, offering advanced features typically found in more expensive professional tools. While generally priced above $100, it’s worth considering if you prioritize wireless connectivity and in-depth diagnostic capabilities.
Our expert review:
Specifications:
- Display/size: None
- Bluetooth/handheld: Yes/No
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: None
- Warranty: 2 year
- Size: 3.2 x 2.0 x 1.1 inches
- Weight: 2.6 ounces
Reasons to buy:
- Extensive vehicle diagnostic coverage
- Live data monitoring
- Unique performance indicators
- Maintenance item coverage
Reasons to avoid:
- Larger transmitter size
- Subscription required for some features after the first year
Despite its unassuming appearance, the Topdon TopScan is more than just a basic Bluetooth OBD-II module. It goes beyond standard fault finding and I/M readiness tests, offering performance and efficiency checks, including estimations of horsepower and torque. These advanced features are rare even in scanners costing significantly more, making the TopScan a valuable tool for both car enthusiasts and those focused on vehicle maintenance.
Read our full Topdon TopScan review.
Best Cheap OBD-II Scanner (Under $50 and Best Value Under $100)
Launch CR529 OBD2 scanner, a budget-friendly option for car diagnostics under $100 and even under $50
3. Launch CR529 (Best Pick Under $100 and Excellent Under $50)
For those seeking the best OBD2 scanner for under 100, and especially those on a tight budget, the Launch CR529 is an exceptional choice. Priced well under $50, it delivers impressive diagnostic capabilities, making it the best cheap OBD2 scanner on our list and a top contender for overall value under $100.
Our expert review:
Specifications:
- Display/size: Color/ 2.8-inches
- Bluetooth/handheld: No/Yes
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: 8
- Warranty: 1 years
- Size: 6.5 x 3.8 x 1.2 inches
- Weight: 11 ounces
Reasons to buy:
- Very affordable
- Lifetime free updates
- Easy pre-inspection report generation
Reasons to avoid:
- Lacks manufacturer-specific codes
- Slightly heavy feel
- 1-year warranty
The Launch CR529 redefines value in OBD-II scanners. Despite its low price, it offers a surprising level of diagnostic features, including live data, instant inspection reports, and detailed insights into your car’s systems. Lifetime updates are a significant bonus, ensuring long-term usability without subscription fees. While it forgoes manufacturer-specific codes and has a slightly heavier build, the CR529 provides essential functionalities for most users. It’s an ideal best OBD2 scanner for under 100 for everyday car owners and DIYers.
Read our full Launch CR529 review.
Best Rugged OBD-II Scanner (Typically Over $100)
Topdon Phoenix Lite 2 OBD2 scanner for professional and rugged use, often above the $100 budget
4. Topdon Phoenix Lite 2 (Professional Grade, Usually Over $100)
The Topdon Phoenix Lite 2 is a robust and professional-grade OBD-II scanner designed for both amateur and experienced mechanics. While its advanced features and rugged build typically place it above the $100 price range, it’s an excellent investment for those needing a durable and highly capable scanner.
Our expert review:
Specifications:
- Display/size: Color/8-inch
- Bluetooth/handheld: Yes/Yes
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: Touchscreen
- Warranty: 2 years
- Size: 10.2 x 7.2 x 1.7 inches
- Weight: 2.6 pounds
Reasons to buy:
- Professional-level OBD scanner
- Wireless handheld with Wi-Fi and Bluetooth
- Large 8-inch touchscreen
- Extensive diagnostic tests and live data
- Includes adapters and hard case
Reasons to avoid:
- Large, heavy, and sometimes cumbersome
- Higher price point
- Subscription required after two years for updates
The Topdon Phoenix Lite 2 bridges the gap between amateur and professional diagnostics. Its wireless design, connecting via Bluetooth to a receiver in the OBD port, offers exceptional freedom of movement. The scanner is built to withstand workshop environments with its rugged design and kickstand. It offers advanced features like live data graphing and comprehensive fault information. While the initial cost is higher and updates require a subscription after two years, the Phoenix Lite 2 delivers professional-grade capabilities.
Read our full Topdon Phoenix 2 Lite review.
Best Dual-Purpose OBD-II Scanner (Consider if Under $100)
Ancel BD310 OBD2 scanner, a dual-purpose tool that may be found under $100
5. Ancel BD310 (Versatile and Potentially Under $100)
The Ancel BD310 is a versatile dual-purpose OBD-II scanner that functions as both a handheld device and a secondary car display when connected to a smartphone via Bluetooth. It’s a strong contender in the best OBD2 scanner for under 100 category due to its functionality and potential affordability.
Our expert review:
Specifications:
- Display/size: Color/2 inches
- Bluetooth/handheld: Yes/Yes
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: 4
- Warranty: 3 years
- Size: 5.1 x 2.4 x 0.6 inches
- Weight: 5.4 ounces
Reasons to buy:
- Lightweight and compact
- Functions as both scanner and car display
- Handheld and Bluetooth scanning
Reasons to avoid:
- Minimalist interface
- Small screen
The Ancel BD310 is designed for convenience and portability. Its compact size allows for easy storage in a glovebox, and its dual functionality enhances its utility. While the 2-inch screen and minimalist interface are limitations, they don’t hinder its diagnostic capabilities. It performs essential functions like I/M readiness tests and displays performance data, including coolant temperature and engine speed. Its versatility and potential price point make it a worthwhile option when looking for the best OBD2 scanner for under 100.
Read our full Ancel BD310 review.
Best Companion App OBD-II Scanner (App Subscription Costs to Consider)
Carly OBD2 scanner emphasizing companion app features, scanner price itself might be under $100 but app subscriptions add cost
6. Carly OBD-II Scanner (App-Dependent, Check Initial Scanner Price Under $100)
The Carly OBD-II Scanner is notable for its exceptional companion app, offering a user-friendly and feature-rich experience. The initial scanner price might fall under $100, making it potentially attractive for budget-conscious users, but it’s crucial to consider the app subscription costs for full functionality.
Our expert review:
Specifications:
- Display/Size: No
- Bluetooth/Handheld: Yes/No
- I/M Readiness Test: No
- Displays live data: Yes
- Number of keys: None
- Warranty: Lifetime
- Size: 2.9 x 1.5 x 0.7 inches
- Weight: 0.7 ounces
Reasons to buy:
- User-friendly app interface
- Customization options
- Live data display
- Maintenance and repair features
- Lifetime warranty and updates
Reasons to avoid:
- Feature availability varies by car model
- App subscription required for full features
The Carly OBD Scanner stands out with its app, which is one of the best available for OBD-II scanners. It offers a wide range of functions, from diagnosing issues and clearing codes to providing repair assistance and used car checks. While the app enhances the user experience significantly and the scanner itself might be affordable, the subscription model for advanced features should be factored into the overall cost, especially when considering the best OBD2 scanner for under 100 in the long run.
Read our full Carly OBD scanner review.
Other OBD-II Scanners We’ve Tested (Further Options Beyond Top Picks)
Innova CarScan Mobile 1000 OBD2 scanner in use, consider price for under $100 value
7. Innova CarScan Mobile 1000 (Innovative Features, Price May Vary)
The Innova CarScan Mobile 1000 is another innovative Bluetooth OBD-II scanner from Innova, offering many advanced features in a compact design. Its price fluctuates, so it’s worth checking if it falls within the best OBD2 scanner for under 100 range when you’re shopping.
Our expert review
Specifications:
- Display/size: None
- Bluetooth/handheld: Yes/No
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: None
- Warranty: 1 year
- Size: 2.0x 1.5 x 1.0 inches
- Weight: 0.9 ounces
Reasons to buy:
- Easy setup
- Small and compact
- Excellent companion app
- Predictive diagnostics and repair suggestions
- Standalone automotive gauge function
Reasons to avoid:
- Uses two separate apps
- Apps contain ads
The Innova CarScan Mobile 1000 is remarkably easy to set up and use. It shares innovative features with larger Innova scanners, including predictive diagnostics and repair guidance. It can also function as a secondary gauge display on your phone. While it relies on two apps and both contain ads, its diagnostic capabilities and ease of use make it a strong contender, especially if found at a price point that makes it a best OBD2 scanner for under 100.
Read the full Innova CarScan Mobile 1000 review.
8. ThinkCar ThinkDiag TKD01 (Subscription Model, Consider Long-Term Cost)
The ThinkCar ThinkDiag TKD01 is a capable Bluetooth OBD-II scanner known for its extensive vehicle coverage and advanced diagnostic features. While the initial scanner cost might be attractive, the required annual subscription after the first year should be considered when evaluating it as a best OBD2 scanner for under 100 in the long term.
Our expert review.
Specifications:
- Display/size: None
- Bluetooth/handheld: Yes/No
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: None
- Warranty: 1 year
- Size: 3.1 x 2.0 x 1.1 inches
- Weight: 2.7 ounces
Reasons to buy:
- Reads enhanced codes
- Optional advanced functions available
- Includes a hard carry case
Reasons to avoid:
- Subscription fee after 1 year
- Larger size
- Initial setup can be less straightforward
The ThinkDiag TKD01 excels in reading manufacturer-specific codes and offers profiles for over 100 car brands. It provides in-depth diagnostics and can handle tasks like oil light resets. Like Innova scanners, it offers predictive maintenance features, though without repair advice. The annual subscription fee after the first year is a significant consideration when comparing it to other options in the best OBD2 scanner for under 100 category.
Read our full ThinkCar ThinkDiag TKD01 review.
Autel AutoLink AL539 OBD2 scanner with multimeter, price may position it around or slightly above $100 bracket
9. Autel AutoLink AL539 (Multimeter Feature, Price May Fluctuate)
The Autel AutoLink AL539 distinguishes itself with an integrated multimeter, allowing for electrical system diagnostics in addition to standard OBD-II functions. Its price can vary, so check if it’s available as a best OBD2 scanner for under 100 option when you are shopping.
Our expert review.
Specifications:
- Display/size: Color/2.8 inches
- Bluetooth/Handheld: Yes/No
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: 8
- Warranty: 1 year
- Size: 6.7 x 3.6 x 1.4 inches
- Weight: 10.6 ounces
Reasons to buy:
- Integrated electrical multimeter
- Battery testing capability
- Built-in stand
Reasons to avoid:
- Multimeter and OBD functions cannot be used simultaneously
- Battery charging required
The Autel AutoLink AL539’s multimeter is a unique and valuable feature for diagnosing electrical issues like shorts, blown fuses, and alternator problems. As an OBD-II scanner, it provides live data and comprehensive I/M readiness tests, with color-coded fault indicators. Its user-friendly design includes a stand and a long cable. While the multimeter cannot be used concurrently with OBD-II scanning and battery charging is needed, its combined functionality positions it as a versatile tool, particularly if you can find it within the best OBD2 scanner for under 100 price range.
Read our full Autel AutoLink AL539 review.
Frequently Asked Questions about OBD-II Scanners
What is an OBD-II Scanner?
OBD-II scanners are diagnostic tools that connect to your car’s onboard computer via the OBD port. They allow you to read error codes, monitor car systems, and diagnose problems, similar to what mechanics do.
What is the OBD-II Port?
The OBD-II (On-Board Diagnostics Version Two) port is a standardized port found in most cars sold in the US since 1996 and in other regions since the late 1990s and early 2000s. It’s used to interface with the car’s computer for diagnostics and other purposes. You can find guides online to locate your car’s OBD-II port if you’re unsure.
What is a DTC?
DTC stands for Diagnostic Trouble Code. These are error codes generated by your car’s OBD system when it detects a problem. OBD-II scanners read these codes to help identify issues.
What do DTCs Actually Mean?
DTCs are alphanumeric codes that indicate the system and specific problem detected by your car. The first character indicates the system (Powertrain, Body, Chassis, Network), the second whether it’s a generic or manufacturer-specific code, and subsequent characters specify the subsystem and fault. While basic scanners display the code, more advanced models provide descriptions. Online resources can help decipher DTCs, of which there are thousands. Not all DTCs indicate critical problems, some are for minor issues.
How to Choose the Best OBD-II Scanner for Under $100
For those looking for the best OBD2 scanner for under 100, several factors are crucial. While high-end features are desirable, focusing on essential functionalities within this budget is key. There are two main types:
- Handheld OBD-II scanners: These have their own display and connect directly to the OBD port.
- Wireless OBD-II scanners: These plug into the OBD port and connect to smartphones or tablets via Bluetooth.
Both types offer viable options within the best OBD2 scanner for under 100 category. Key criteria to consider include:
- Easy Setup: A scanner should be quick and easy to set up for prompt diagnostics.
- Faults and Explanations: The scanner should not only display fault codes but also provide explanations to help you understand the issue.
- I/M Readiness Check: Essential for emissions testing, this feature checks if your car will pass inspection.
- Accuracy: Accurate readings are paramount for reliable diagnostics.
- Size and Weight: A compact and lightweight scanner is more convenient for storage and use.
- Live Data: Real-time data monitoring helps in diagnosing intermittent issues.
- Graphs: Visual data representation can be more insightful than numerical data alone.
- Warranty: Look for a reasonable warranty period for peace of mind.
When choosing the best OBD2 scanner for under 100, decide between handheld or wireless based on your preference. Consider models offering lifetime updates to ensure long-term compatibility. For handheld scanners, prioritize screen size and clarity. Ruggedness can be beneficial for durability. Some scanners offer extras like multimeters or manufacturer-specific code reading, but prioritize core functionalities within this budget. Ultimately, you can find a highly capable best OBD2 scanner for under 100 that meets your diagnostic needs without overspending.
How We Test OBD-II Scanners
We rigorously test OBD-II scanners to provide reliable recommendations. Our testing process involves:
- Vehicle Connection: Connecting each scanner to a test vehicle’s OBD-II port and verifying VIN reporting.
- Wireless Connectivity (for wireless scanners): Testing Bluetooth or Wi-Fi connections with devices like iPads and smartphones.
- Functionality Testing: Monitoring engine and vital systems, inducing faults (like disconnecting the oil temperature sensor), and assessing fault code reporting, clearing, and live data display.
- On-Road Testing: Evaluating live data display during driving, including engine speed, timing, and coolant temperature, and assessing data presentation (numbers, graphs, gauges).
Our comprehensive testing ensures we recommend only the best OBD2 scanners, including those that offer exceptional value under $100. We focus on practical performance and user-friendliness to help you choose the right tool for your car diagnostic needs.
More from Tom’s Guide (Explore Further Resources)
Explore more of our car tech reviews and guides on Tom’s Guide for in-depth information and recommendations on automotive technology and tools. Finding the best OBD2 scanner for under 100 is just the beginning of empowering yourself with car diagnostic knowledge.
