Britain’s Challenger 3 and the American M1A2 Abrams SEPv3 are among the most advanced Western main battle tanks, but their strengths lie in different areas. Military Affairs compared the two vehicles in terms of firepower, protection, mobility, electronics and platform maturity.

Firepower: Challenger 3 Has the Edge

One of the Challenger 3’s most significant upgrades is its new 120mm Rheinmetall L55A1 smoothbore gun, replacing the rifled L30A1 used by the Challenger 2. The new weapon is designed to provide greater range and firepower, improved accuracy and a longer service life.

The Abrams SEPv3 retains its 120mm main gun, although its fire-control system has been upgraded. The American tank also has a CROWS remotely operated weapon station, which is not currently seen on the Challenger 3 configuration.

Protection: No Clear Advantage

The Challenger 3 is set to receive new Farnham armor that can be supplemented with additional modular protection. Its design also allows for the integration of an active protection system.

The Abrams SEPv3 relies on heavily upgraded composite armor and can also be fitted with additional protection, including ARAT reactive armor.

Based on the characteristics cited by Military Affairs, neither tank has an obvious overall advantage in protection.

Mobility: Abrams Is Faster, Challenger 3 More Efficient

The Abrams can reach speeds of up to 45 mph, or about 72 km/h, on roads. Its Honeywell AGT1500 gas turbine provides strong mobility for such a heavy vehicle, but comes with high fuel consumption and significant maintenance requirements.

The Challenger 3 uses an upgraded Perkins CV12-9A V12 diesel engine. Although it cannot match the Abrams in maximum speed, it is expected to offer better fuel efficiency.

The British tank’s weight has also been reduced from roughly 75 to 66 tonnes, although the final figure could increase once its full package of additional armor is installed.

Electronics: Major Upgrades on Both Tanks

The Abrams SEPv3 features modern communications equipment, upgraded fire-control systems, advanced thermal sights and equipment for using programmable ammunition.

The Challenger 3 has undergone an extensive overhaul of its electronic architecture. Its commander and gunner receive new-generation thermal imaging systems, although many details about the tank’s electronic capabilities remain classified.

Maturity: Abrams Has the Advantage

The Abrams has one important advantage that cannot be replicated by specifications alone. The platform has been in service and continuously upgraded for decades, meaning its strengths, weaknesses and maintenance requirements are well understood.

The Challenger 3 is a much newer vehicle and has yet to undergo prolonged operational service. Some technical shortcomings may therefore become apparent only after the tank enters full-scale service.

Overall, the Challenger 3 appears stronger in terms of its newer main gun and fuel efficiency, while the Abrams SEPv3 has advantages in maximum speed and platform maturity. Their protection and electronic capabilities are more closely matched, leaving neither vehicle with an obvious overall technical superiority based on the characteristics compared.