Sisu 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.
SIPRI records a 2022 Finland-to-Ukraine second-hand aid transfer of estimated XA-180/Pasi vehicles, with its external comment identifying the XA-185 version; Defense Express reported Finnish Sisu XA-180 APCs at the front and later described Pasi vehicles in Ukrainian Naval Infantry training and combat context.
Role detailsThe XA-180 sits between cold-war wheeled troop carriers and later modular protected vehicles: it was built for easy operation, road mobility, troop carriage, and water-crossing capability rather than heavy direct combat.
The XA-180/XA-185 branch is described as fully amphibious, with water propulsion by rear propellers on the closely related XA-185 and a Finnish-service XA-180M wading depth listed at 1.80 m.
Sources: Army Guide XA-180 Pasi; Finnish Defence Forces XA-180M.
Defense Express describes the Ukrainian-service XA-180 as carrying two crew and sixteen dismounts, and later reported Ukrainian marines training with Pasi vehicles in landing-operation drills.
Sources: Defense Express XA-180 Ukraine; Defense Express Pasi Ukrainian Marines.
The Finnish MLU added communications, electrical, seating, engine, transmission, and axle work, showing how the 1980s design was retained for service life into the 2040s.
Source: Patria XA-180 MLU.
Army Guide says the first Finnish order reserved nine XA-180s for the Finnish United Nations Battalion, and the current gallery includes Lebanon and IFOR-era XA-180 images.
Sources: Army Guide XA-180 Pasi; Commons Sisu XA-180 Lebanon Image; Commons Sisu XA-180 IFOR Image.
The XA-180 was the first 180 kW Pasi-series model; later XA variants adjusted powertrain, armor, mission equipment, or command and radar roles while retaining the Finnish wheeled APC lineage.
| Variant | Configuration | Designation notes |
|---|---|---|
| XA-180 | Original amphibious APC | The baseline model carried a two-person crew and infantry passengers; Finnish Defence Forces data for the XA-180M lists the modernized vehicle with a 12.7 mm NSV heavy machine gun and 7.35 m by 2.90 m by 2.77 m dimensions. Sources: Finnish Defence Forces XA-180M, Army Guide XA-180 Pasi |
| XA-180M | Mid-life-upgraded Finnish-service vehicle | Patria completed the Finnish XA-180 MLU project after updates to electrical systems, communications equipment, crew-space seating, and major driveline components, with the lifecycle secured until the 2040s. Sources: Patria XA-180 MLU |
| XA-185 | Improved amphibious APC | Army Guide describes the XA-185 as a closely related amphibious model with all-welded steel armor, rear troop doors, roof hatches, twin water propellers, and a 12.7 mm machine-gun mount. Sources: Army Guide XA-180 Pasi |
| XA-181 | Air-defense chassis | Army Guide identifies the XA-181 chassis as the carrier used for Finland's Crotale New Generation air-defense system. Sources: Army Guide XA-180 Pasi |
| XA-202 / XA-203 | Command, communications, and later protected variants | Army Guide describes the XA-202 as a platform for communications, command, sensor, and radar systems, while later 200-series variants formed a more protected branch of the Pasi family. Sources: Army Guide XA-180 Pasi |
Several XA-family chassis carried heavier mission systems beyond the baseline troop-carrier role.
| Compatible item | Item type | Compatibility evidence |
|---|---|---|
 | Short-range air-defense system | Army Guide describes Finland's Crotale New Generation air-defense system as mounted on the XA-181 6x6 chassis, an XA-series air-defense branch related to the Pasi family. Sources: Army Guide XA-180 Pasi |
 | 120 mm turreted mortar system | Army Guide notes that an XA-203 was fitted with the twin 120 mm AMOS mortar system for Finnish Defence Force trials before Finland selected the AMV chassis for AMOS service vehicles. Sources: Army Guide XA-180 Pasi |
Open reference sources describe Sisu's XA-180 prototype as the Finnish Army trial vehicle that competed to replace BTR-60-family armored personnel carriers.
Sources: Army Guide XA-180 Pasi
The XA-180 was selected after trials in the early 1980s, leading to initial Finnish orders before serial production began.
Sources: Army Guide XA-180 Pasi
Patria and the Finnish Defence Forces signed the agreement for the XA-180 mid-life upgrade project in 2013.
Sources: Patria XA-180 MLU Contract
Defense Express reported that Finnish Sisu XA-180 armored personnel carriers had appeared at the front with Ukrainian troops.
Sources: Defense Express XA-180 Ukraine
Defense Express described Ukrainian Navy material showing Panssari-Sisu/Pasi vehicles with Ukrainian marines and reported that the vehicles had already been used in combat against Russian forces.
Sources: Defense Express Pasi Ukrainian Marines
Patria announced that it had delivered the last upgraded XA-180 armored personnel vehicle to the Finnish Army and completed the MLU project.
Sources: Patria XA-180 MLU
