Challenger 3 vs Leclerc XLR, Britain and France Rebuild the Heavy Tank

Challenger 3 and Leclerc XLR are Europe’s two heavily rebuilt Western tanks, a roughly 66-tonne British four-man design against a roughly 58-tonne French three-man design, and they reach the same 120mm gun by very different routes. Both are upgrades of 1990s hulls, both are small fleets, and the choice between them comes down to whether a mission needs armor and firepower growth or mobility and networking.

148 vs 200

Tanks being converted, Challenger 3 vs Leclerc XLR

~66 t vs ~58 t

Approximate combat weight

1,200 vs 1,500 hp

Engine output, Challenger 3 vs Leclerc XLR

4 vs 3

Crew size, autoloader on the Leclerc

Challenger 3 vs Leclerc XLR specs

Side-by-side specifications

Item	Challenger 3	Leclerc XLR
Builder	Rheinmetall BAE Systems Land (RBSL)	KNDS France
Program	148 Challenger 2 hulls rebuilt, GBP 800 million contract (2021)	About 200 Leclercs renovated under SCORPION
Crew	4 (commander, gunner, loader, driver)	3 (commander, gunner, driver); autoloader
Combat weight	About 66 tonnes with modular armor	About 57-59 tonnes with XLR kits
Main gun	120mm Rheinmetall L55A1 smoothbore	120mm CN120-26 smoothbore, 52 calibers
Engine	Perkins CV12 V12 diesel, about 1,200 hp	SACM V8X-1500 hyperbar diesel, 1,500 hp
Power to weight	About 18 hp per tonne	About 26 hp per tonne
Road speed	Around 60 km/h	About 72 km/h
Networking	Digital turret architecture, open electronics	SCORPION SICS battle management and CONTACT radios
Timeline	Full operating capability targeted for 2030	First XLRs reached the army in 2023

Figures from public MoD, RBSL, KNDS and French Army statements; weights and speeds are approximate. Challenger 3 figures are program targets.

For deeper single-tank detail, see our guides to the Challenger 3 and the Leclerc XLR.

Which has better firepower

Challenger 3 has the longer gun. The L55A1 is a 55-caliber smoothbore that fires the German-led NATO family of rounds, including DM73 kinetic penetrators and programmable DM11 multi-purpose rounds. That ends the isolation of the old rifled L30 gun, which used ammunition no other NATO army fielded.

The Leclerc’s 52-caliber gun is shorter but remains a first-class weapon, and its autoloader gives a steady rate of fire with 22 rounds ready to shoot. France produces its own 120mm ammunition, and in NATO gunnery competitions Leclerc crews have long been among the quickest shooters. On paper the British gun has a slight muzzle-energy advantage, but the French tank can deliver more rounds per minute and needs one fewer crew member.

Which has better protection and mobility

The Challenger 3 gets a new modular armor package on the heaviest hull in NATO, carrying a pedigree from the Challenger 2’s Chobham-derived protection. The design is built to add upgrade kits, and an active protection system has been trialed, although fleet-wide fitting depends on funding. Weight is the price: about 18 horsepower per tonne makes it the slowest tank of this group, and bridges and rail loading are more demanding.

The XLR adds flank and belly kits, a jammer against radio-triggered bombs, laser warning and a remote weapon station, but leaves the armor level of the base tank largely unchanged. Its engine, about 26 horsepower per tonne, gives it the best mobility among Western heavy tanks. France has studied an active protection system for the fleet without fielding one, a gap that matters after the lessons of active protection system performance in Ukraine.

Challenger 3 vs Leclerc XLR by mission

Verdict by mission profile

Mission	Better fit	Why
Heavy breakthrough	Challenger 3	Heavier armor, longer gun, higher crew redundancy
Fast maneuver and pursuit	Leclerc XLR	Higher power to weight and road speed
Networked combined-arms operations	Leclerc XLR	SCORPION links tanks, scouts and infantry today
Sustained combat with crew fatigue	Challenger 3	Four-man crew shares loading, observation and maintenance
Cost and logistics	Leclerc XLR	Smaller, lighter and in a single-nation supply chain
NATO ammunition commonality	Challenger 3	L55A1 joins the German ammunition family

Qualitative assessment by Defence & Tech; neither tank has fought in its upgraded form.

Which tank is better

Neither wins across the board. Challenger 3 is the more powerful and better-protected tank, and the Leclerc XLR is the more agile and better-networked one. Both face the same strategic problem: fleets of 148 and 200 tanks leave little margin for attrition, unlike the hundreds of Leopard 2 and Abrams tanks fielded by bigger armies. For how they fit in the larger picture, see our top 10 main battle tanks ranking.

Editor’s read

The comparison shows two philosophies of modernization. Britain chose to rebuild the turret and gun around NATO standards and keep mass and armor, while France kept the core tank and invested in networking and survivability kits. Both will look dated in the 2040s unless an active protection system and drone-defense suites are fitted across the fleet, and both are waiting on the next-generation MGCS program to justify replacing them.