Jul 13, 2026 · 8 min read · blog
None of that means fleets are turning electric overnight. Vehicles stay in service for years, and turnover across the wider fleet is slow, which means most organisations will run diesel, petrol, hybrid, and electric vehicles side by side for years yet. Industry analysis is consistent on this point: mixed fleets create their own administrative load — separate fuelling and billing systems, different maintenance schedules, and driver processes that vary by vehicle type. Without integrated systems, that complexity eats up disproportionate management time.
For most fleet managers, that's the real, practical question: how do you get one reliable view of a fleet that's several vehicle types at once — without buying a separate tool for each one, or fitting hardware to every vehicle you own? Here's what full fleet visibility actually requires, and how it works for a mixed fleet that isn't going anywhere soon.
Fleet data is rarely missing. It's scattered — across OEM apps, fuel cards, leasing portals, and spreadsheets, with each system covering only part of the fleet. Pulling a complete picture together typically means pulling from four or five different systems, a process that's slow and easy to get wrong. Most fleet management tools compound the problem: built around manual data entry rather than a live connection to the vehicle itself.
Live Fleet Management exists to close that gap: mileage, maintenance, charging costs, vehicle health, and cost data from every vehicle type, aggregated into a single live dashboard — one login, one view, one source of truth for fleet, finance, and sustainability teams alike.
Most fleet software is built for one vehicle type. It handles EVs well, or it handles combustion vehicles well — rarely both, in the same interface, from the same data model. That's a problem for the roughly half of enterprise fleets that run a genuine mix today, and it gets worse over time: as EV numbers grow, fleet teams end up running a legacy telematics system for their combustion vehicles alongside a separate EV-only portal, doubling the admin rather than reducing it.
A mixed fleet needs one platform that treats every vehicle as a first-class citizen regardless of what's under the bonnet — the same live odometer data, fault codes, and maintenance logic applied consistently, whether a vehicle runs on diesel or electrons.
Traditional telematics means fitting a physical device to every vehicle: an installation appointment, vehicle downtime, and — often — a conversation with the OEM about what a third-party device does to the vehicle's warranty. All of that, before a single data point arrives. The direct cost alone can run to £500 per vehicle.
Every vehicle built in Europe since 2018 already carries a factory-fitted connectivity module. Rather than adding a device on top of it, that existing connection can simply be activated via a certified API. No installation queue, no engineer visits, no warranty conversation — and no cost per vehicle beyond the software itself.
Onboarding a hardware-free platform starts with a VIN list, not a procurement project. Typically, a fleet is live within days to a couple of weeks, depending on fleet size and how ready the underlying vehicle data is — no fitting bays, no vehicles taken off the road. It's a large part of why roughly half of new customers joining Volteum are switching over from an existing telematics or fleet management tool rather than starting from scratch.
Getting a live feed from every vehicle is only half the job. OEM data streams are noisy on their own — inconsistent reporting frequency, occasional outliers, false-positive alerts. There are three layers of work that turn a raw feed into something a fleet manager can actually use:
That's the difference between a data feed and an answer — and it's what determines whether a live vehicle connection actually saves a fleet manager time, or just moves the spreadsheet problem onto a new screen.
Fault codes and vehicle health signals — including battery state of charge — arrive in real time from OEM data streams, and the right person gets an automatic alert the moment something needs attention. Battery anomalies, diagnostic codes, and safety-critical warnings surface before they turn into a breakdown or a missed shift, rather than depending on a driver to notice and report that something's wrong.
The same live data drives planned maintenance: mileage and OEM service intervals are cross-referenced automatically, so a vehicle approaching a distance- or time-based service threshold gets flagged before it's overdue — no spreadsheet to maintain, no relying on memory. It's less a dashboard someone has to check, and more a system that raises its hand on its own.
For any fleet with more than roughly 10–15% EV penetration, charging cost is one of the fastest-growing and least-visible line items in the budget. Every charging session can be detected automatically and classified by location — home, office, depot, or public network — then allocated to the correct vehicle, with alerts triggered when a driver leans too heavily on expensive public charging. Home charging sessions are captured with the same automatic detection, giving finance teams accurate session data to work from when settling driver reimbursement.
Charging Optimisation builds directly on this same data set once a fleet's EV numbers are large enough to make active charging scheduling worthwhile.
When vehicle, cost, and maintenance data live in one platform, "what does our fleet actually cost right now" stops being a two-week reporting exercise. Costs can be broken down by vehicle, category, or period for finance; the same clean, consolidated data supports management and ESG reporting without a separate export process for each audience.
None of this requires a fleet to be further along its EV transition than it already is — it works identically for a fleet that's still mostly diesel. But the same operational data that powers day-to-day visibility — mileage, cost, and fault history — is exactly what's needed to plan the next stage properly: which vehicles are realistic electrification candidates, and what the total cost of ownership actually looks like once real usage data replaces assumptions. That's where Electrification Planning comes in — a natural next step once the operational foundation is already in place, not a separate project to run in parallel.
Book a demo to see how it looks for your fleet's specific vehicle mix.