In a wide variety of different terrain types, wheels simply aren’t an option. This has led to militaries as far apart as Finland and Singapore operating all-terrain tracked vehicles in a bewildering array of roles. In essence, when you need infantry in terrain too rough for wheeled platforms, you throw in an all-terrain vehicle for whatever mission you ordinarily would see a truck perform. The terrain can then be made up of bogs, meter-deep snow, or other kinds of soft and/or rough spots. What matters is that you need the lowest possible ground pressure, or even amphibious capabilities.

For a long time the field has been dominated by the ubiquitous Bv 206 from Hägglunds (today BAE Systems Hägglunds), which has seen use by the armed forces of 25 different countries (if Wikipedia is to be trusted), including not only Finland, Sweden, and Norway, but the German airborne and mountain troops, the British Royal Marines, and the Dutch Korps Mariniers as well.

The Bv 206 is a sturdy vehicle, with the basic chassis and the compartments generally not really being worn out. The biggest downside is the complete lack of protection, the vehicle front compartment and trailer basically being two big boxes of fiberglass reinforced plastic, capable of stopping thrown rocks, but not much else. The 80’s technology in the drivetrain and other parts of the vehicle are also starting to show their age, with spare parts being increasingly difficult to find.

This has made the question of finding a replacement one that interest a number of countries throughout Europe, with not only the Bv 206 but also other older vehicles of the same class starting to need replacing. To that end Germany organised a multinational meeting for European users last February to look into the alternatives.

Several modern vehicles are found on the market, including BAE System Hägglund’s BvS10 Viking Mk 2 and ST Engineering’s Bronco ATTC, which underwent snow mobility testing in Finland last winter. However, for a country like Finland which has over 600 Bv 206 and a number of older indigenous Sisu NA-series (as well as a handful of the lightly protected Bv 308), getting a similar number of modern protected all terrain vehicles is probably overly expensive. The BvS10 Viking is found in an unarmoured (and likely cheaper) version designated BvS10 BEOWULF, but with modern military vehicles ‘cheap’ doesn’t necessarily equal ‘little money’.

Enter Millog’s Bv 206 MLE concept, a simple drop-in lifetime extension developed by Hellgeth engineering Spezialfahrzeugbau GmbH in Germany. The core of the upgrade is a completely new drivetrain centred around a Mercedes-Benz OM651, a modern 4-cylinder CDI engine, together with an equally new ZF 6 HP 28 gearbox with six forward gears (as opposed to four in the original Bv 206). Some other changes are also included in the MLE, such as a new radiator and fan, new steering/hydraulics, a new exhaust gas recirculation system, a new CAN bus based electric system, and a new control panel on the dashboard. When the MLE testbed isn’t doing laps around the Neue Jadewerft in Wilhelmshaven, it is in regular use by the Jääkäriprikaati in Sodankylä, in the far north of Finland.

Based on the last one and a half years of service with the Bv 206 MLE, which include over 5000 km, the new drivetrain does what can be expected of this kind of mid-life upgrade. The fuel consumption has been lowered by 30% compared to the regular Bv 206 D6N with its 6-cylinder Daimler Benz Ag OM603 A diesel. It has a lower heat signature, higher torque at low engine speed, and reduced maintenance needs. If anyone is wondering about the noise level in the video clip above, there’s a KMW APVT doing laps out of view, with the Bv 206 being quite low noise. However, the most important benefit might be that using a current commercial off-the-shelf engine and gearbox means spare parts are readily available at short notice, significantly improving downtime during scheduled and unscheduled maintenance stops.

Millog is clear with their aim. “We aren’t competing with new vehicles,” as a company representative explains. But as all terrain vehicles are the sole alternative for the roadless country found up north in Finland, there will be a continued requirement for serious numbers of these kinds of platforms. And as “the basic vehicle is a solid design”, this kind of low-cost and decidedly low-tech lifetime extension for the larger part of the fleet coupled with a buy of a smaller number of modern protected vehicles for use as APCs would be a very Finnish solution. At the moment the future of the Finnish fleet is undecided, but Millog is ready to modify significant parts of the Finnish Bv 206-fleet in-country if the Finnish Defence Forces decides to go down that route.

This is one alternative for the FDF, time will tell which route the service chooses

But what then causes Millog to ship the Bv 206 MLE demonstrator to AMBLE Baltic in Germany? Millog mentions the general need for these kinds of amphibious all terrain vehicles for marine forces around the world, but word on the street has it that there’s a more direct connection between the German marines and the potential for a Bv 206 upgrade as well. As mentioned the German airborne and mountain forces use Bv 206S (a protected version closely related to the Bv 308 in use by e.g. Finland and Sweden). However, especially the Gebirgsjäger would like to upgrade to the BvS10 Viking, while the Seebatallion has a requirement for an all terrain vehicle, of which they currently have none. It is speculated one likely solution would be that the mountain troops get new vehicles, while their Bv 206 are passed on to the marines. They would then require some kind of a mid-life update, such as the Bv 206 MLE. The German-designed drive train with a German engine and gearbox could certainly be a tempting option, especially as the upgrade has proven itself to be more than just a paper product.