What Is Aviloo? The Company Behind the EV Battery Certificate You Keep Seeing

You have probably seen the name on a used EV listing, mentioned by a dealer, or referenced in a forum thread about battery health. Aviloo is an Austrian company that tests electric vehicle batteries independently and issues a certificate showing the result. This is what they actually do, how the testing works, and whether the certificate is worth trusting.

I run EV TrustSeal, a different kind of battery verification, so I will say upfront where this explainer stops being neutral: the sections on what Aviloo actually is and how it works are straightforward fact. Any comparison to alternatives, including mine, comes later and is clearly marked as my own view.

Where Aviloo came from

Aviloo was founded in 2017 by Wolfgang Berger and Nikolaus Mayerhofer, according to the company's own history page, after the founders identified a gap: buyers of used electric cars had no independent way to check the battery's actual condition. The company is based in Austria and has spent the years since building out battery diagnostic technology, moving from an early product into the two-tier testing system it offers today.

Aviloo describes itself as the market leader in independent battery testing, with operations extending across Europe and into markets including the US, Mexico, Brazil, South Korea, Japan and Australia. That is Aviloo's own characterisation of its position, not an independently audited ranking, but the geographic footprint itself is real and documented on their site.

The two tests: Flash and Premium

Aviloo offers two distinct products, and they are not interchangeable. Both are hardware-based, which is the main structural difference from a service like EV TrustSeal, covered in more detail further down.

The Flash Test is the faster, more widely available option. A device connects to the car's OBD diagnostic port and completes a reading in around three minutes. Rather than measuring a single physical property directly, Aviloo's own technical description states that the Flash Test result comes from a statistical model incorporating thousands of comparable vehicles alongside signals including mileage, age, the car's own battery management system estimates, energy counter data and cell voltage spread. Aviloo states this test covers more than 96 per cent of common EV and plug-in hybrid models, which is a genuinely broad range of vehicle compatibility, considerably wider than EV TrustSeal's current coverage. A certificate is issued immediately, with a QR code allowing anyone to verify it independently, the same basic verification principle EV TrustSeal certificates use.

The Premium Test is a deeper, slower process aimed at end customers who want more than a quick reading. A device is shipped to the owner, connected to the OBD port, and records a full charging cycle, typically the battery being run from close to full down to around 10 per cent over roughly a week of normal driving. Aviloo states this test is TÜV-certified and suitable as evidence in legal disputes, and it is delivered in partnership with TÜV SÜD in parts of Europe. It is a more involved process than the Flash Test, and in exchange it produces a more detailed picture, including insight into cell-level condition rather than a single headline percentage. Nothing in EV TrustSeal's audit involves shipped hardware or a week-long process; that trade-off runs the other way, covered below.

For both tests, Aviloo publishes an accuracy figure: a maximum deviation of plus or minus 3 per cent in at least 95 per cent of reference measurements, the same headline figure EV TrustSeal publishes for its own audit, arrived at through a different method.

Is Aviloo legitimate?

Worth answering directly, since it is presumably why you are reading this.

Aviloo holds a TÜV SÜD partnership for its Premium Test in parts of Europe, TÜV being a well-established independent testing and certification body, not a marketing badge Aviloo awarded itself. The company is rated 4.4 out of 5, described as "Excellent," on Trustpilot based on customer reviews. It has been operating in this specific niche since 2017, which is a meaningfully long track record in a market that has only recently started to mature. And its certificates carry a QR verification system rather than being a static document a seller could edit, which is the same basic trust mechanism that independent proof in this category is generally built around, including EV TrustSeal's own certificates.

None of that makes every individual test result infallible, no diagnostic tool is immune to edge cases, but the company itself has the hallmarks of a legitimate, established operator rather than a fly-by-night product.

How to actually get an Aviloo test

Availability and the exact process vary by country. In several markets Aviloo works through local partners and testing networks rather than selling directly to consumers, so the practical experience of getting a Flash Test in, say, Australia looks different from ordering a Premium Test in central Europe. Pricing varies by market and provider for the same reason. If you want current pricing and process for your specific country, check directly with Aviloo or their local partner rather than relying on a figure from a blog post, prices in this category move.

If your car isn't covered by a local Aviloo partner, or you would rather not arrange a booking at all, it is worth checking whether EV TrustSeal supports your vehicle instead, since the two options are built for genuinely different situations, covered next.

Where Aviloo fits against the alternatives

This is the section where I stop being neutral, since I run EV TrustSeal, a different approach to the same underlying problem.

Aviloo's tests are hardware-based: a physical device connects to your car, whether briefly for the Flash Test or for a week with the Premium Test. That access to the diagnostic port is exactly what lets Aviloo read cell-level detail an app or API connection cannot see, which is a genuine advantage for anyone who wants that depth, particularly for legal disputes or suspected cell-level faults.

The trade-off is the hardware itself: a booking or a shipped device, and in the Premium Test's case, a week of the car being monitored. EV TrustSeal's audit works differently, through a read-only connection to your car's manufacturer account rather than a physical device, observing one ordinary charging session rather than requiring an appointment. It measures capacity rather than cell-level detail, and it is not TÜV-certified. Different tool, different job.

I have written a full side-by-side comparison, including current pricing where I could verify it, in Aviloo vs EV TrustSeal. For the wider landscape of independent battery certification beyond just these two, see independent EV battery certificates: which to trust.

Frequently Asked Questions

What does Aviloo actually measure?

The Flash Test produces a statistical estimate of State of Health built from vehicle data and comparison against similar cars. The Premium Test records a full charging cycle and provides a more detailed, TÜV-certified assessment including cell-level data. Both differ structurally from EV TrustSeal's approach, which measures capacity from a single observed charging session rather than a shipped device.

How accurate is Aviloo?

Aviloo publishes a stated accuracy of plus or minus 3 per cent in at least 95 per cent of reference measurements, according to the company's own materials. EV TrustSeal publishes the same headline figure for its own audit.

Is Aviloo the same everywhere?

No. Availability, the exact process, and pricing vary by country and are often delivered through local partners rather than directly. Confirm details for your specific market before assuming a price or process you have read applies to you.

Do I need special knowledge to use Aviloo?

No. Aviloo states no special expertise is required for either test, and the Flash Test in particular is designed to be run by a technician or tester without specialist training. EV TrustSeal is designed the same way, no expertise needed, since the whole process runs through a normal account login and normal charging.

Is there a home-based alternative to Aviloo?

Yes, for some brands and markets. EV TrustSeal runs entirely from your car's own manufacturer API connection rather than a physical device, so there is nothing to ship, install, or return. It is a different method with different trade-offs, covered in the comparison linked above.

The short version

Aviloo is a genuine, TÜV-partnered, well-reviewed Austrian battery diagnostics company operating since 2017, offering a fast statistical Flash Test and a deeper, week-long Premium Test, both producing an independently verifiable certificate. Whether it is the right choice for your situation depends on what you need it for, your location, and how much time you have. EV TrustSeal is built for a narrower set of situations, no hardware, no booking, one charging session, and the comparison linked above works through exactly when each one fits.

If your car is supported and you want a result without arranging a device or a booking, connect it free at EV TrustSeal and see whether the home-based option fits your situation better.