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Find out about OBDeleven's new features, read educational articles and learn more about the automotive world. Read more.

Blog | OBDeleven

Maintenance

How to set car maintenance reminders on smartphone | OBDeleven

Set car maintenance reminders on your phone so you never miss service. Learn simple methods, and see how OBDeleven can track mileage-based tasks for you.

How to follow a car maintenance schedule and set reminders

Emissions test is often a mandatory part of a technical inspection. Find out what you should do before the emissions test to pass it.

Check out simple, professional tips on how to pass emissions test and find out the most common reasons cars fail smog tests.

How to pass an emissions test: 6 pro tips for drivers

Tools & plans

Buying a used car – how to check a car’s mileage

A mileage check is an essential step when buying a used car. With OBDeleven, you can easily access the information you need to make an informed decision.

How to check a car’s mileage with OBDeleven

News

SEMA SHOW 2025: how it went for OBDeleven

See how OBDeleven took on SEMA 2025 in Las Vegas – the biggest event for car enthusiasts.

SEMA SHOW 2025: how the biggest week in car culture went for OBDeleven

Buying a car

Odometer rollback: How to avoid fraud | OBDeleven

Understand odometer rollback, how it’s used to commit fraud, and how to avoid it when buying a used car.

Odometer rollback: How to avoid fraud

Lifestyle

Must-have car accessories for 2026 | OBDeleven

Discover the best car accessories for 2026 – smart, practical, and future-ready gadgets that improve comfort, safety, and every drive.

Must-have car accessories in 2026

There are many car maintenance apps on the market, some work best with OBD tools. Take a look at the most popular options on the market with reminders and other maintenance features.

We reviewed popular car maintenance apps and tested their features. Here's a summary of our findings.

The 7 best car maintenance apps to keep your vehicle in top shape

Diagnostics & troubleshooting

P0521 – Engine Oil Pressure Sensor/Switch Range/Performance | OBDeleven

Does your car show a P0521 fault code? It points to an engine oil pressure sensor issue. Learn what it means and what to check next in this guide.

P0521 – Engine Oil Pressure Sensor/Switch Range/Performance