Best OBD2 Scanners Under $100: Diagnose Your Car Without Breaking the Bank

A car dashboard warning light can trigger immediate anxiety for any car owner. Is it a minor issue or a major problem? Typically, deciphering these warning lights meant an expensive trip to the mechanic. But with the right tools, you can take control and understand your car’s health yourself, potentially saving time and money.

OBD-II scanners are invaluable tools that allow you to tap into your car’s computer and diagnose potential issues directly. Knowing what’s wrong empowers you to decide if it’s a simple fix you can handle at home or if professional help is truly needed. However, the market is flooded with options, and choosing the right OBD2 scanner, especially on a budget, can be overwhelming.

That’s where we come in. At TechCarUSA, our expert team has rigorously tested a wide range of OBD-II scanners to help you find the best options, even when you’re looking for a budget-friendly solution. We understand that you don’t need to spend a fortune to get a reliable and effective OBD2 scanner. This guide focuses on the best OBD2 scanners under $100, proving that you can get excellent diagnostic capabilities without breaking the bank.

Our top recommendation for the best OBD2 scanner under 100 is the Launch CR529. It delivers an impressive array of features typically found in much pricier models, making it an outstanding value. For those who prefer a wireless option within this budget, the Ancel BD310, while sometimes found slightly above $100, represents a versatile choice worth considering for its dual functionality.

Here’s a quick rundown of our top picks for the best OBD2 scanners under $100 you can buy today. Keep reading for more detailed reviews and insights to help you choose the perfect scanner for your needs and budget.

Alt text: Tom Pritchard, automotive expert and tech reviewer at Tom’s Guide.

Tom Pritchard
Tom is a seasoned tech editor with extensive experience reviewing automotive technology and gadgets.

Quick Picks: Best OBD2 Scanners Under $100

Based on our hands-on testing, here are the top OBD2 scanners under $100 that offer the best performance and value:

best cheap scanner

Launch CR529: The best OBD2 scanner under 100 overall for its rich features and exceptional value. It offers capabilities that rival scanners costing significantly more.

best dual-purpose scanner
2. Ancel BD310: A highly versatile and compact option, often available close to the $100 mark, that functions both as a handheld scanner and a secondary car display.

Scroll down for in-depth reviews of each of these best OBD2 scanners under $100 and to understand why they stand out.

What Makes a Great OBD2 Scanner Under $100?

When searching for the best OBD2 scanner under 100 dollars, certain features become crucial. You want a scanner that provides essential diagnostic capabilities without sacrificing quality or ease of use. Here’s what we looked for in our top picks:

Essential Diagnostic Functions: At a minimum, the best OBD2 scanner under 100 should be able to read and clear diagnostic trouble codes (DTCs), display live data, and perform I/M readiness checks to ensure your car will pass emissions tests.
Ease of Use: A user-friendly interface is vital, especially for beginners. The scanner should be easy to navigate, with clear menus and understandable error code explanations.
Value for Money: The key is to get the most features and reliable performance for your budget. The best OBD2 scanners under $100 offer a fantastic balance of functionality and affordability.
Durability and Build Quality: While budget-friendly, the scanner should still be reasonably durable to withstand regular use in a garage or car environment.
Update and Support: Ideally, the scanner should offer software updates to stay compatible with newer vehicles and potentially include customer support if you encounter any issues.

We prioritized these factors when evaluating scanners to recommend the best OBD2 scanners under $100 that truly deliver on their promises.

Best Value OBD2 Scanner Under $100

(Image credit: Future)

1. Launch CR529

The best OBD2 scanner under 100 for its incredible feature set and unbeatable price.

Expert Review:

The Launch CR529 consistently impresses us with its exceptional value. It’s truly remarkable what this OBD2 scanner under 100 dollars offers in terms of diagnostic capabilities. For car owners looking for a powerful yet affordable tool, the CR529 is a top recommendation.

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 year
Size: 6.5 x 3.8 x 1.2 inches
Weight: 11 ounces

Reasons to Buy:

Unbeatable Price: Frequently found under $50, making it the best cheap OBD2 scanner with high-end features.
Lifetime Updates: Ensures the scanner remains up-to-date with the latest vehicle protocols and diagnostic codes, extending its lifespan.
Easy Pre-Inspection Report: Simplifies emissions testing preparation, saving you time and potential headaches.
Feature-Rich: Despite its low price, it provides live data, I/M readiness checks, and comprehensive diagnostics.

Reasons to Avoid:

Lacks Manufacturer Specialty Codes: May not access advanced manufacturer-specific codes, which might be needed for very specific or in-depth diagnostics on certain car brands.
Feels Slightly Heavy: Some users might find it a bit heavier compared to more compact scanners.
1-Year Warranty: While standard, some competitors offer longer warranty periods.

In our testing, the Launch CR529 proved to be an outstanding performer, especially considering its price point. We were genuinely surprised by the level of diagnostic features packed into this OBD2 scanner under 100. It delivers essential functions like reading and clearing codes, displaying live data streams, and performing I/M readiness tests with ease. The inclusion of lifetime free updates is a significant advantage, ensuring long-term value and compatibility.

While it might not have all the bells and whistles of professional-grade scanners, for the average car owner or DIY enthusiast, the Launch CR529 is the best OBD2 scanner under 100 you can buy. It provides an incredible balance of features, performance, and affordability, making car diagnostics accessible to everyone.

Read our full Launch CR529 review.

Best Dual-Purpose OBD2 Scanner (Close to $100)

Ancel BD310 (Image credit: Tom’s Guide)

2. Ancel BD310

A versatile and compact OBD2 scanner under $100 that offers dual functionality.

Expert Review:

The Ancel BD310 is a unique OBD2 scanner that often falls within or slightly above the $100 budget, offering impressive versatility. Its ability to function as both a handheld scanner and a supplemental dashboard display sets it apart from other scanners in this price range.

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:

Dual Functionality: Works as a standard handheld scanner and can display live engine data on your smartphone via Bluetooth, acting as a secondary car display.
Compact and Portable: Small and lightweight, easily stored in a glovebox for on-the-go diagnostics.
Bluetooth Connectivity: Offers wireless scanning and data viewing convenience through your smartphone.
3-Year Warranty: Provides longer warranty coverage than many competitors in this price range, indicating greater confidence in product durability.

Reasons to Avoid:

Minimalist Interface: The interface is quite basic, which might not appeal to users who prefer more visually rich or advanced displays.
Small Screen: The 2-inch screen can feel a bit cramped for some users, especially when viewing detailed data.

The Ancel BD310 stands out for its innovative dual-purpose design and portability. As an OBD2 scanner under $100 (or close to it), it delivers core diagnostic functions effectively. Its ability to connect to your smartphone via Bluetooth and display real-time engine parameters is a unique and valuable feature, especially for monitoring car performance or troubleshooting while driving (with caution and a passenger).

While its interface is simple and the screen is small, the BD310 compensates with its versatility and ease of use. The compact size makes it incredibly convenient to keep in your car, and the 3-year warranty adds peace of mind. If you value portability and the added benefit of a secondary display function in an OBD2 scanner under $100, the Ancel BD310 is an excellent choice.

Read our full Ancel BD310 review.

Frequently Asked Questions About OBD2 Scanners

What is an OBD-II Scanner?

An OBD-II scanner is a diagnostic tool that connects to your car’s On-Board Diagnostics port (OBD-II) to access information from its computer system. Mechanics use these scanners to diagnose car problems efficiently. Even basic OBD2 scanners under 100 can read error codes and provide valuable insights into your vehicle’s health.

What is the OBD-II Port?

The OBD-II port is a standardized port found in almost all passenger vehicles sold in the United States since 1996, and in other regions shortly after. It’s the interface point for accessing your car’s computer. You can find guides online to help you locate your car’s OBD-II port.

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. OBD2 scanners, even those under $100, read and interpret these codes to help you understand what’s wrong.

What do DTCs Actually Mean?

DTCs are alphanumeric codes that can seem cryptic at first. However, they follow a logical structure indicating the affected system (Powertrain, Body, Chassis, Network), the code type (generic or manufacturer-specific), and the specific fault. Best OBD2 scanners under 100 will usually provide a description of the DTC, making it easier to understand the issue. Online resources like Google can also help decipher DTCs.

Are all DTCs Critical Issues?

No, not all DTCs indicate major problems. Some might be minor warnings, like a slightly elevated engine temperature. However, it’s always best to investigate any DTC to ensure your car is running optimally and to prevent potential larger issues. Using an OBD2 scanner under 100 allows you to proactively monitor your car’s condition.

Choosing the Best OBD2 Scanner Under $100 for You

Selecting the best OBD2 scanner under 100 depends on your individual needs and priorities. Here’s a breakdown of key considerations:

Handheld vs. Wireless: Handheld OBD2 scanners have their own screen and are self-contained. Wireless OBD2 scanners connect to your smartphone or tablet via Bluetooth. For OBD2 scanners under 100, handheld scanners are more common, offering reliable functionality without the need for a separate device.
Essential Features: Ensure the scanner reads and clears DTCs, displays live data, and performs I/M readiness checks. The best OBD2 scanners under 100 will cover these basics effectively.
Ease of Use: Look for a scanner with an intuitive interface and clear instructions, especially if you’re a beginner.
Update Capability: Lifetime updates are a significant bonus, ensuring long-term compatibility and value, as seen in the Launch CR529, a top contender for the best OBD2 scanner under 100.
Durability: Consider the build quality, especially if you’ll be using the scanner frequently in a garage environment.
Budget: Set a clear budget and stick to it. As our recommendations show, you can find excellent OBD2 scanners under $100 that meet most car owners’ needs.

For most car owners seeking an affordable and reliable diagnostic tool, the best OBD2 scanner under 100 will provide ample functionality to understand and address common car issues. Investing in one can save you money on unnecessary mechanic visits and empower you to take better care of your vehicle.

How We Test OBD2 Scanners

To determine the best OBD2 scanners, including the best OBD2 scanners under 100, we conduct rigorous hands-on testing. Our process involves:

Vehicle Compatibility Check: We ensure each scanner properly connects to a test vehicle’s OBD-II port and reads the VIN (Vehicle Identification Number).
Feature Verification: We test all advertised features, including reading and clearing DTCs, displaying live data streams, performing I/M readiness checks, and any special functions.
Ease of Use Assessment: We evaluate the scanner’s user interface, menu navigation, and overall ease of setup and operation, considering both beginners and experienced users.
Performance Evaluation: We simulate car issues by disconnecting sensors to trigger error codes and assess the scanner’s accuracy in identifying and reporting these faults.
Real-World Road Test: We use the scanners while driving to monitor live data and assess their ability to provide real-time insights into engine performance.
Durability and Build Quality Check: We examine the scanner’s physical construction and assess its robustness for typical garage use.

Through this comprehensive testing process, we identify the top-performing OBD2 scanners across various categories, including the best OBD2 scanners under 100, ensuring our recommendations are reliable and based on real-world performance.