Manufacturer catalog

Sisu Auto

Sisu Auto is a Finnish heavy-vehicle and military-vehicle manufacturer based in Karjaa, Raseborg, Finland. Its defense relevance centers on protected wheeled mobility, tactical trucks, modular mission bodies, and domestic production capacity for Finland and export customers. The modern Sisu GTP 4x4 line connects the company to current Nordic protected-mobility procurement, while the earlier Sisu XA-180/Pasi armored personnel carrier gives the catalog a second, historically important Sisu armored-vehicle lineage.

2 weapons

Sisu Auto describes its core competences as product development and production of trucks and military vehicles, with vehicle-technology consulting, design, and project management supporting that manufacturing base. The company presents itself as a Nordic heavy-duty vehicle specialist with more than 90 years of vehicle-manufacturing history and an address at Tammisaarentie 45 in Karjaa.

The manufacturer's current defense line is built around the SISU GT family, especially the GTP 4x4 tactical vehicle. Sisu's public product data emphasizes modular crew cabs and interchangeable superstructures, all-terrain mobility, STANAG 4569-class protection options, and seating configurations that can support squad, reconnaissance, and utility layouts.

Sisu Auto's public announcements in 2025 and 2026 show a rapid expansion phase rather than a one-off vehicle program. The company and Valmet Automotive announced cooperation on SISU GT-series component manufacturing and final assembly at Uusikaupunki, while Sisu's 2026 press material described growing revenue, exports as a large share of turnover, and a defense-industry cooperation program linked to next-generation mobility.

protected mobility vehiclesmilitary truckstactical wheeled vehiclesheavy-duty vehicle engineeringvehicle technology consulting

Notable Systems

Sisu GTP, 4x4 protected mobility vehicle, Armored Vehicles

Sisu GTP

4x4 protected mobility vehicle

Current Sisu Auto 4x4 tactical vehicle family with modular crew cab and mission-body architecture, off-road mobility features, STANAG 4569 protection options, and Finnish procurement documented by the Finnish Ministry of Defence.

Sources: Sisu Auto GTP 4x4, Finland MOD Domestic Off-road Vehicles
Sisu XA-180, 6x6 amphibious armored personnel carrier, Armored Vehicles

Sisu XA-180

6x6 amphibious armored personnel carrier

Original Finnish Pasi 6x6 armored personnel carrier; Army Guide records SISU building the XA-180 prototype against the Finnish Defence Forces requirement and the December 1983 initial order for SISU XA-180 APCs.

Sources: Army Guide XA-180 Pasi

Manufacturer History

  1. Sisu vehicle manufacturing begins

    Sisu Auto's 2026 press material describes the company as a Finnish producer of military vehicles and heavy-duty commercial vehicles founded in 1931.

    Sources: Sisu Auto C4IMobility Press Release

  2. Initial XA-180 order

    Army Guide records the Finnish government placing an initial order for 59 SISU XA-180 armored personnel carriers after trials of Sisu and Valmet 6x6 prototypes.

    Sources: Army Guide XA-180 Pasi

  3. Finland orders more GTP vehicles

    Finland's Ministry of Defence authorized the Defence Forces to order 13 Sisu GTP 4x4 off-road vehicles from Oy Sisu Auto Ab, following 31 vehicles purchased in 2020 and 2022.

    Sources: Finland MOD Domestic Off-road Vehicles

  4. Valmet production cooperation announced

    Valmet Automotive and Sisu Auto announced cooperation covering component manufacturing and final assembly of complete SISU GT-series vehicles at Valmet Automotive's Uusikaupunki plant.

    Sources: Valmet Automotive Sisu Cooperation

  5. C4IMobility letter of intent signed

    During a Finnish defence minister visit to Sisu Auto's Karjaa factory, Sisu Auto and Finnish industry, research, and technology organizations signed a letter of intent to establish the C4IMobility cooperation program for next-generation defense mobility solutions.

    Sources: Sisu Auto C4IMobility Press Release

Website links
Official websiteAbout Sisu AutoSISU GTP 4x4Valmet Automotive manufacturing cooperationFinnish GTP procurement release

This profile covers Oy Sisu Auto Ab as the Finnish manufacturer label used for the catalog's Sisu GTP and Sisu XA-180 records. Current Sisu Auto sources support modern GT-family production; open reference sourcing is used for the older XA-180/Pasi lineage because that program spans legacy Sisu, Sisu Defence, and later Patria-linked structures. No manufacturer image is included because the official Sisu CMS image URL failed the repository image report during this pass.

Manufacturer Sources

  • Sisu Auto About UsPublisher: Sisu Auto | Note: Official corporate page supporting Sisu Auto identity, Karjaa address, military-vehicle and truck-development focus, manufacturer background, and current press-release summaries. | Accessed: 2026-07-06
  • Sisu Auto GTP 4x4Publisher: Sisu Auto | Note: Official product page supporting Sisu Auto's Sisu GTP 4x4 product context and modular protected tactical-vehicle specifications. | Accessed: 2026-07-06
  • Sisu Auto C4IMobility Press ReleasePublisher: Sisu Auto | Note: Official Sisu Auto press release supporting 1931 founding context, military and heavy-duty vehicle production, Karjaa factory context, revenue/export background, and the May 2026 C4IMobility letter of intent. | Accessed: 2026-07-11
  • Sisu Auto ST Engineering Press ReleasePublisher: Sisu Auto | Note: Official Sisu Auto press release supporting the SISU GTT Arctic-capable mobility cooperation with ST Engineering and broader GT-family engineering context. | Accessed: 2026-07-11
  • Valmet Automotive Sisu CooperationPublisher: Valmet Automotive | Note: Official Valmet Automotive release supporting Sisu Auto's GT-series component manufacturing and final-assembly cooperation at Uusikaupunki, production-capacity expansion, and Finnish security-of-supply context. | Accessed: 2026-07-11
  • Finland MOD Domestic Off-road VehiclesPublisher: Ministry of Defence, Finland | Note: Official Finnish procurement release supporting the December 2023 order for 13 Sisu GTP 4x4 vehicles from Oy Sisu Auto Ab and earlier Finnish purchases in 2020 and 2022. | Accessed: 2026-07-11
  • Army Guide XA-180 PasiPublisher: Army Guide | Note: Reference source supporting Sisu's XA-180/Pasi lineage, the Finnish 6x6 APC requirement, prototype competition, December 1983 initial order, and subsequent XA-family development. | Accessed: 2026-07-11

Produced weapons

Category

Armored Vehicles

Troop carriers, infantry fighting vehicles, and protected mobility.

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Sisu GTP, 4x4 protected mobility vehicle, Armored Vehicles2014 Russia-Ukraine WarSisu GTP4x4 protected mobility vehicleBuilt in: FinlandSisu GTP is a Finnish 4x4 protected mobility vehicle built by Sisu Auto around a modular crew cab and interchangeable mission bodies. Official Sisu material emphasizes off-road mobility, STANAG 4569-class protection options, a 16.5-tonne gross weight, and seating layouts from utility to 2+8 troop-transport configuration; Finnish and Swedish procurement has since expanded the family into TGB24 troop-transport, command, medical, CBRN, and air-defense roles, while 2026 defense reporting placed at least one GTP with Ukrainian Special Operations Forces without a public transfer route.
Sisu XA-180, 6x6 amphibious armored personnel carrier, Armored Vehicles2014 Russia-Ukraine WarSisu XA-1806x6 amphibious armored personnel carrierBuilt in: FinlandSisu XA-180 is the original Finnish Pasi 6x6 armored personnel carrier, designed by Sisu Auto for the Finnish Defence Forces as an amphibious troop carrier with simple maintenance, a two-person crew, and space for an infantry squad. The type later became part of Patria's XA-series support and modernization work, and Ukrainian and defense-media reporting documented XA-180/XA-185-family Pasi vehicles with Ukrainian troops and marines during the full-scale phase of the 2014 Russia-Ukraine War.