Infocar - OBD2 ELM Scanner

Review by eFreeware

If you own an OBD2 adapter and want to know what your car is doing without booking a workshop visit, Infocar is built for exactly that. It pairs with the adapter over Bluetooth, reads the fault codes your engine control unit has stored, and explains them in plain terms. The appeal is straightforward: a phone, a dongle and a bit of curiosity get you a picture of your vehicle's condition.

The app comes from Infocar Co., Ltd. and sits in the Auto & Vehicles category. It has been on Google Play since September 2018 and has passed ten million installs, with a 3.8 average from more than 27,000 ratings. It is free to download, carries ads and offers in-app purchases, and the developer notes that some features need a subscription or a one-off purchase. That mix tells you roughly what to expect before you install it.

Fault codes, explained and cleared

The core of the app is diagnostics. It looks for problems in the ignition system, the exhaust system and electronic circuits, then presents what it finds as error codes sorted into three levels of severity. Each code comes with an explanation, so you are not left staring at a string of letters and numbers wondering what P0420 means for your week.

Once you have read the codes, you can delete the stored ones from the ECU with a tap. That is useful after a repair, or when a sensor has thrown a warning you have already dealt with. The developer describes the results as being close to what a workshop would see, which is a bold claim, but the underlying idea is sound: the same port the mechanic plugs into is the one your adapter uses.

The most recent update added automatic diagnosis and what the developer calls AI fault code diagnosis, alongside warning sounds and colors for the dashboard and HUD. Those additions suggest the app is trying to do more of the interpretation for you rather than leaving you to look up codes yourself.

Live data and a dashboard you can watch

Beyond fault codes, Infocar reads live sensor data. The developer puts the figure at more than 800 OBD2 data points available in real time, which you can view as graphs to see how values move as you drive. For anyone who likes to see coolant temperature climb on a summer climb or watch fuel trims shift, this is the part that rewards patience.

There is also a dashboard that pulls the essentials onto one screen, with the layout customizable to your preferences. The app displays live fuel economy and how much fuel is left. A head-up display mode puts speed, RPM and trip distance in view while you are driving, which is the sort of feature that sounds gimmicky until you are trying to keep an eye on revs without looking down.

The manufacturer data side is the deeper layer. Infocar draws on over 2,000 manufacturer-specific sensors matched to your vehicle model, and organizes diagnostic results by control unit rather than dumping everything into one list. That structure matters once you move past basic engine codes into the various modules a modern car carries.

Driving records, scores and costs

Infocar also keeps a record of how you drive. It logs distance, time, average speed and fuel efficiency, and flags speeding, sudden acceleration and sudden braking on a map. Playback maps recorded driving metrics against time and place, so you can go over a trip afterward instead of only watching it live.

Those records feed into driving style analysis, which scores your safety and economy and charts the results over time. The scores are meant to support ongoing improvement, and the statistical graphs give them context rather than leaving them as a single number. If you export the logs, you get an Excel file for your own analysis.

The vehicle management side is quieter but practical. You can set replacement schedules for consumables based on recommended cycles and your odometer, and track expenses by category or date. For a household running two or three cars, having service intervals and spending in the same place as the diagnostic history is a reasonable convenience.

What you need before it works

Infocar is not a standalone tool. It needs an OBD2 adapter, and the developer is candid that while the app supports devices built on international OBD2 protocol standards, it is optimized for the company's own hardware. Some features may be limited with third-party adapters, so the experience depends partly on which dongle you already have or are willing to buy.

The app asks for several permissions. Bluetooth access is needed to find and connect to the adapter; location for driving records, Bluetooth searches and showing where you parked; microphone for voice recording in the black box feature; camera for capturing parking spots and black box video; and file access for downloading driving records. The main services still work if you decline the optional permissions, which is a sensible arrangement.

In-app subscriptions bill to your Google account and renew on their own unless you cancel at least 24 hours before the period ends; uninstalling the app does not cancel them. Worth remembering if you subscribe and later change phones.

Who gets the most from it

The clearest fit is a driver who already has an adapter and wants to keep an eye on a car's condition between services. Reading a fault code before a workshop visit, clearing it after a repair, and watching live values when something feels off are the tasks this app is built around. Owners of older cars, where small faults tend to appear gradually, may find the monitoring especially useful.

The driving style and expense features widen that circle. Someone tracking fuel costs, or a parent watching how a shared car is being driven, has a reason to open the app beyond diagnostics. The Excel export and playback suit people who like to look at their own numbers rather than just glance at a summary.

The app is less compelling if you have no adapter and no interest in buying one, since the diagnostics and live data depend on that hardware. The same applies if you would rather hand the car to a mechanic and not think about it. Infocar is for people who want visibility into their own vehicle, and it delivers that through a device you have to supply.

A worthwhile tool for hands-on owners

Infocar covers a lot of ground for a free download: fault code reading and clearing, live sensor graphs, a customizable dashboard with a head-up mode, driving scores, trip playback, service scheduling and expense tracking. The 3.8 rating from a large number of users suggests it does the basics well enough to keep people around, though it is not a flawless average.

The conditions are clear. You need a compatible OBD2 adapter, and you will get the most from the app with the developer's own hardware rather than a third-party unit. Ads and in-app purchases are part of the package, and some features sit behind a subscription. Those are reasonable trade-offs for a tool of this scope, but they are trade-offs.

If you service your own car, or simply want to know what that warning light is telling you before you pay someone to find out, Infocar is a sensible thing to install. If you would rather not deal with an adapter or a subscription, the app has little to offer you on its own.

What's new in version 2.30.0

2026.09.07 Release Notes 1. Added AI fault code diagnosis 2. Added automatic diagnosis 3. Redesigned PRO upgrade purchase page 4. Added dashboard/HUD warning sound and warning color settings 5. Other bug fixes and stability improvements