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If you run trucks across Europe, you probably know the pain of managing toll payments country by country. Different devices, different contracts, different invoices. OBU EVA, Eurowag’s on-board unit for commercial vehicles, was built to change that. This guide answers the most common questions about EVA: what it does, how it works, who it’s for, and how it connects with fleet management and fuel fraud protection.
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EVA (Enhanced Vehicle Assistant) is a smart on-board unit designed for commercial vehicles operating across Europe. It handles toll payments automatically using GNSS, GSM and DSRC technology, which means the device detects the country and toll domain by itself and collects payments without driver interaction.
Beyond tolling, EVA streams real-time vehicle data to Eurowag Office, Eurowag’s fleet management platform, and works together with Fuel Guard to protect against unauthorized fuel card use.
In short: one device for tolling, fleet visibility, and fuel fraud protection.
OBU stands for on-board unit, the generic term for devices installed in vehicles to handle electronic toll collection. EVA is Eurowag’s own OBU, combining tolling with telematics and fraud protection in a single integrated solution. It is primarily designed for commercial vehicles above 3.5 tonnes, but can also be used in buses and other professional fleet vehicles depending on operational requirements.
EVA currently supports toll payments in:
France and Italy are covered via Axxès DSRC or an EVA + Axxès bundle. Since 1 July 2026, the Netherlands joined the EETS framework, and EVA covers Dutch toll payments since that date.
For a full overview of European toll solutions, including national vignettes and other systems, visit the toll services page.
EVA uses three technologies depending on the country and toll system:
An optional external LTE communication module is available for countries where 2G networks are not supported, such as Switzerland. The module connects between the OBU and its power cable and improves telematics performance in those markets.
EVA supports both EETS (European Electronic Toll Service) toll domains and selected national toll systems. Not all European toll systems are EETS-based yet, so coverage in some markets uses local integrations, partner solutions, or national toll technologies. Coverage and certification depend on the individual toll domain.
Drivers can update axle count and vehicle weight class directly on the EVA device using the physical buttons: press the arrow buttons to navigate, select the required value, and confirm with the OK button. This matters because toll fees in several countries are calculated based on current vehicle configuration, including attached trailers.
EVA provides real-time alerts directly on the device through LED indicators, on-screen warnings and sound notifications. Confirmed alert types include GPS signal loss, unstable server connection, incorrect OBU placement, low or critical battery, blocked toll domains, toll transaction errors, tamper detection, incorrect vehicle settings and internal device errors.
EVA integrates exclusively with Eurowag Office, Eurowag’s fleet management platform. The connection enables a range of operational features for different roles in a transport company.
When EVA is installed, Eurowag Office gives you access to:
Insights and reports:
Transport management:
The Planner calculates estimated toll costs for a planned route before the trip begins. If you’re delivering from the Czech Republic to Spain, you don’t just see fuel costs: you get a toll cost estimate per country, so you can assess profitability before dispatching.
The Infringements feature monitors and tracks driver compliance with EU working time regulations, helping fleet managers identify potential violations before they lead to fines for the company or the driver.
The Dispatcher board shows real-time estimated delivery times and recalculates them automatically in case of delays. When someone calls to ask about an expected arrival, the dispatcher already has an updated estimate on screen.
Driver behavior scoring tracks each driver across four dimensions: overall score, economy (fuel efficiency), ecology (for companies with environmental reporting requirements), and safety. For larger fleets, the platform shows a company average, benchmarks it against the Eurowag customer base, and highlights top performers and drivers who may benefit from coaching.
EVA is included with the Eurowag Truck Basic package at no service fee and with no commitment. Advanced features such as driver behavior monitoring, tachograph download, CAN bus data and full reporting are available in Eurowag Truck Pro. Trailer tracking comes with Eurowag Trailer Pro, and there is also a package for passenger car fleets. Pricing is contact-based. See the full comparison on the fleet management page.
Fuel Guard is a free optional security feature that compares fuel card transactions with the truck’s GPS location at the time of the transaction. When a fuel card payment occurs, the system checks whether the vehicle is actually at the fuel station. If the card is used in a different location, the transaction is flagged as suspicious.
This protects against stolen cards, copied cards and unauthorized refueling, all without changing anything in the driver’s normal refueling routine. To use Fuel Guard, the vehicle must have a compatible connected OBU (EVA or equivalent), the device must be correctly paired with the fuel card, and the feature needs to be activated by the customer.
Card Lock is a second, independent layer of protection. When active, the fuel card cannot be used until it is manually unlocked before refueling. Drivers or fleet managers can unlock the card through the Eurowag Client Portal, SMS, the Eurowag App, or in some markets via automated phone services. Card Lock works on any Eurowag fuel card and does not require an OBU device. Like Fuel Guard, it is free and optional.
EVA has an internal battery but is designed to operate connected to vehicle power. Three connection options are available:
The device operates within 8-42V DC and works in temperatures from -20°C to 85°C. The device model is EW OBU U850. There is no deposit and delivery is free. A monthly fee applies for device rental. For pricing details, contact the Eurowag team directly.
Instead of managing multiple national toll devices, contracts, invoices and providers, fleets use a single EETS-certified OBU across multiple European countries. EVA also combines tolling with fleet management and fuel fraud protection, reducing administration and keeping operations within one ecosystem. Additional benefits include over-the-air country activation, centralized billing and support from a single provider.
EVA is suited for commercial fleets of any size, from a single owner-driver to large international fleets. Different roles in a transport company benefit in different ways:
OBU EVA is Eurowag's toll unit for commercial vehicles. It enables automatic toll payments in multiple European countries and combines tolling, fleet management and fuel fraud protection in one device.
EVA supports toll payments across most major European toll networks. It automatically detects toll domains, so no separate device is needed for each country. For the full country list, visit the toll solutions page.
EVA can be connected via a 12V socket without fixed installation. Advanced telematics features are available with optional professional installation. A monthly rental fee applies, with no deposit required. Contact the team for a tailored offer.
The device immediately alerts the driver via LED signals and on-screen messages, helping to identify issues such as transaction errors, signal loss or connectivity problems.
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Stop juggling multiple toll systems. With a single EETS-certified OBU, you handle toll payments automatically, accurately and with every cost under control.
