Frequently Asked Questions

OEM telematics refers to the vehicle connectivity that’s built into a vehicle during manufacturing. These systems tap directly into the vehicle’s internal electronics, giving fleet managers access to high-quality diagnostics, maintenance alerts, and system data, often through the manufacturer's own portal or via integrations. One of the biggest advantages is that no installation is needed, and data can start flowing immediately once the vehicle is activated.

However, OEM telematics comes with limitations. Each manufacturer has its own platform and data format, which can make it difficult to create consistent reports across mixed fleets. Additionally, not all data is accessible or exportable, and subscription costs often apply after a trial period ends.

Expert Insight: “OEM telematics provides high-quality data, but standardizing insights across different platforms can be challenging.”

Aftermarket telematics involves installing external devices in vehicles after purchase. These devices collect real-time data on location, engine diagnostics, driver behavior, and more, and can be deployed across a wide range of vehicles—from light-duty trucks to heavy equipment. Because aftermarket systems are designed to work across many brands and models, they produce consistent, brand-agnostic data that simplifies fleet-wide analysis. This makes them ideal for fleets with diverse assets, older vehicles, or complex reporting needs.

While the devices do require initial installation, the process is typically quick and non-invasive. There are hardware and connectivity costs to consider, but the benefits in terms of flexibility, advanced analytics, and data ownership often outweigh the upfront investment.

Expert Insight: “Aftermarket hardware implemented and correctly configured can provide greater control. You’re not dependent on the OEM, and you can scale your telematics strategy on your own terms.”

The answer depends on the makeup of your fleet. OEM telematics shines when vehicles are newer and from the same manufacturer. It offers deep diagnostic insights, especially when you’re using one brand across the board.

However, aftermarket telematics delivers a higher level of consistency and standardization across diverse fleets. That consistency is key to actionable reporting—particularly when you're managing assets from multiple manufacturers or legacy vehicles alongside new ones.

Expert Insight: “True visibility comes from consistency. Aftermarket solutions help every vehicle speak the same data language.”

Yes. Integrating mixed telematics data starts with choosing a platform or analytics partner that supports both OEM APIs, flexible integrations, and aftermarket hardware. Partners like Utilimarc, an authorized Geotab reseller,  help to normalize the data and create a unified view of the fleet regardless of the source. This means you can continue using existing devices or OEM connections without replacing your entire tech stack or disrupting operations.

The goal is to maintain flexibility while creating a streamlined, centralized system that supports operational decisions.

Expert Insight: “You don’t have to choose between OEM and aftermarket—you just need the right tools, support, and resources to bring the data together properly.”