There are two main development batches of the tank, the original models up to Leopard 2A4 which have vertically-faced turret armour, and the "improved" batch, namely the Leopard 2A5 and newer versions, which have angled arrow-shaped turret appliqué armour together with a number of other improvements. All models feature digital fire control systems with laser rangefinders, a fully stabilized main gun and coaxial machine gun, and advanced night vision and sighting equipment (first vehicles used a low-light level TV system or LLLTV; thermal imaging was introduced later on). The tank has the ability to engage moving targets while moving over rough terrain. It can drive through water 4 meters (13 ft) deep using a snorkel or 1.2 meters (3 ft 11 in) without any preparation and climb vertical obstacles over one meter high. The tank is powered with a turbo-charged multi-fuel V12 diesel engine that produces 1,500 PS (1,479 hp, 1,103 kW).
Variants of Leopard 2
Leopard 2
The Leopard 2 proper, sometimes informally called the "A0" to differentiate it from later versions, was the first series manufactured version. The vehicles were manufactured from October 1979 until March 1982, altogether 380 vehicles. 209 were built by Krauss Maffei and 171 by MaK. The basic equipment consisted of electrical-hydraulic WNA-H22, a fire control computer, a laser rangefinder, a wind sensor, a general purpose telescope EMES 15, a panorama periscope PERI R17, the tower sight FERO Z18, on the tower roof as well as a computer controlled tank testing set RPP 1–8. 200 of the vehicles had a low-light enhancer (PZB 200) instead of a thermal imaging. Two chassis served as driver training vehicles.
Leopard 2A1
A number of minor modifications and the installation of the gunner's thermal sight was worked into the second batch of 450 vehicles Leopard 2 designated the A1; 248 by Krauss-Maffei (Chassis Nr. 10211 to 10458) and 202 by Mak (Chassis Nr. 20173 to 20347). Deliveries of the 2A1 models started in March 1982 and ended in November 1983. The two most notable changes were the modification of the ammunition racks to be identical to those in the M1 Abrams, and redesigned fuel filters that reduced refuelling time.
A third batch of 300 Leopard 2; 165 by Krauss-Maffei (Chassis Nr. 10459 to 10623) and 135 by MaK (Chassis Nr. 20375 to 20509.) 2A1's of the third batch were built between November 1983 and November 1984, which included more minor changes that were later retrofitted to the earlier 2A1's.
Leopard 2A2
This designation was given to upgraded vehicles of the first batch of Leopard 2s, brought up to the standard of the second and third batches. This modernization gradually replaced in the first batch the original PZB 200 sights with thermal sights for the EMES 15 as they became available. Furthermore the upgrade included the fitting of filler openings and caps to the forward hull fuel tanks to allow separate refueling, as well as the addition of a deflector plate for the periscope and a large cover plate to protect the existing NBC protection system. Finally, the tank was given new five meter towing cables with a different position. The programme began in 1984 and ended in 1987; the third, fourth and fifth batches were during this period produced with the same features. The modernized first batch can be recognized by the circular plate covering the hole where the cross-wind sensor for the fire-control system was removed.
Leopard 2A3
The fourth batch of 300 vehicles Leopard 2;165 by Krauss-Maffei (Chassis Nr. 10624 to 10788) and 135 by Mak (Chassis Nr. 20510 to 20644) was delivered between December 1984 and December 1985. The main change was the addition of the SEM80/90 digital radio sets (also being fitted to the Leopard 1 at the same time), and the ammunition reloading hatches being welded shut. Even with these minor changes the new batch was known as the 2A3.
Leopard 2A4
The most widespread version of the Leopard 2 family, the 2A4 models included more substantial changes, including an automated fire and explosion suppression system, an all-digital fire control system able to handle new ammunition types, and improved turret with flat titanium/tungsten armour.
The Leopard 2s were manufactured in eight batches between 1985 and 1992. All the older models were also upgraded to 2A4 standard. Germany operated a total of 2,125 2A4s (695 new built and the rest modified older versions), while the Netherlands had an additional 445 tanks. The 2A4 was also license manufactured in Switzerland as the Panzer 87 "Leopard" or Pz 87. This version included Swiss-built machine guns Mg 87 of 7.5 mm and communications equipment, and featured improved NBC protection. Switzerland operated 380 Pz 87 tanks.
After the end of the Cold War, Germany and the Netherlands found themselves with large stocks of tanks, which they did not have any need for. These tanks were therefore successfully sold to NATO or friendly armies around the world. Austria (114), Canada (80), Chile (140), Denmark (51), Finland (124), Greece (183), Norway (52), Poland (128), Portugal (37), Singapore (96), Spain (108), Sweden (160), and Turkey (339) were among the buyers of the surplus tanks.
The Pz 87WE (WertErhaltung) is a Swiss modification and upgrade of the Pz 87. The modification significantly improves protection, through the addition of the Leopard 2A6M's mine protection kit, thicker armour on the front glacis, and the turret is equipped with a Swiss-developed armour package that use titanium alloy. The turret roof armour is improved, and the smoke grenade launchers have also been redesigned. Further improvements enhance survivability and combat capability, such as a turret electric drive similar to the Leopard 2A5, a driver rear view camera, a independent weapons station for the loader, and enhanced command and control systems. The fire control system is also upgraded, using the Carl Zeiss Optronics GmbH PERI-R17A2 fire control system. A remote weapons station containing a fully stabilized Mg 64 0.50 calibre machine gun is also fitted to the tank.
The Leopard 2A4CHL is the upgraded Chilean version of the Leopard 2A4 ordered by Chile in 2007. Upgrades include new electronics, sighting and information systems meant to elevate the Leopard 2A4's networking capability to be equal to that of the Leopard 2A6, a new suspension system and the upgrading of the tanks main gun to the L55 smoothbore cannon used on the Leopard 2A6. Other upgrades are remote weapon stations over the gunner and commander hatches fitted with the MG3 and HK GMG. The Leopard 2A4CHL also has improved roof and side turret armour and can be uplinked with Chile's battlefield control network.
Leopard 2A5
The A5 introduced a wedge-shaped spaced add-on armour to the turret front and sides. Though its main function is to defeat a hollow charge attack, the spaced armour is also designed to affect kinetic-energy penetrators by forcing them to change direction and by eroding them in the process; it does not form a shot-trap since it doesn't deflect the penetrators outwards to hit the hull or turret ring. The gun mantle was redesigned to accept the new armour. There were also some improvements in the main armour composition. Tank interior received spall liners to reduce fragments if the armour is penetrated. Side skirts were replaced with a new type. The commander's sight was moved to a new position behind his hatch and it received an independent thermal channel. The gunner's sight was moved to the turret roof as opposed to the cavity in the front armour in previous models. A new heavier sliding driver's hatch was fitted. Turret controls went all-electric, increasing reliability and crew safety, and producing some weight savings. The gun braking system was improved to prepare the later mounting of the new L55 gun and to enable firing of more powerful ammunition, such as the DM-53 APFSDS. The A5 entered service in the German tank battalions in mid-1998.
The Leopard 2(S) is a Swedish Army variant of the Leopard 2A5, which has received the local designation Strv 122. It is based on what was then called "Leopard 2 Improved" and features increased armour on the turret top and front hull, and improved command and control and fire control systems. Externally, the vehicle can be distinguished from the Leopard 2 A5 by the French GALIX smoke dispensers, different storage bins, and the much thicker crew hatches. It's also equipped with a new command system.
The Leopard 2A5 DK is a variant of the Leopard 2A5 similar to the Leopard 2A6 with some small modifications, used by the Danish Army.
Leopard 2A6
Includes the addition of the Rheinmetall 120 mm L55 smoothbore gun and a number of other changes. All German tank battalions of the "crisis intervention forces" are equipped with the A6, as are all Dutch operational units. Canada has also purchased 40 Leopard 2A6s from the Netherlands.
The Leopard 2A6M is a version of the 2A6 with enhanced mine protection under the chassis, and a number of internal enhancements to improve crew survivability. Canada has borrowed 20 A6Ms from Germany for deployment to Afghanistan in late summer 2007. The new tanks all have turret electric drive.
The Leopard 2A6M CAN is a Canadian variant of the Leopard 2A6M. Significant modifications include distinctive black boxes mounted on the rear of the turret bustle, originally expected to be the new air conditioning unit but instead likely contains Canadian Forces designated communications gear (as they lined up with the new antennae stands), and stand-off slat armour. The first tanks configured in this variant are the twenty tanks loaned from the German Bundeswehr, in an effort to increase firepower and to increase protection given to Canadian troops operating in the south of Afghanistan. The loaner tanks are expected to retain their German MG3 machine guns, while the ex-Dutch tanks are expected to retain their FN MAG machine guns due to commonality with existing Canadian stocks. Due to the loaned status of the first 20 tanks, the air conditioning unit cannot be installed as only minimal changes could be made (crew will wear cooling vests, and the turret's electric drive generates less heat than the hydraulic drive of Canada's older Leopard C2), while the ex-Dutch tanks are expected to receive more extensive modifications. However, the loaned German tanks may be kept by the Canadian Forces and upgraded even further, while the ex-Dutch Leopard A6's may be modified to German Leopard 2A6M's specifications, and be used as restitution for the loaned tanks.
The Leopard 2 Hel is a derivative of the 2A6, ordered by the Greek Army in 2003. The "Hel" stands for "Hellenic". The 170 tanks are to be delivered between 2006 and 2009. A total of 140 will be built in Greece by ELBO, which delivered the first units in late 2006.
The Leopard 2E is a derivative of the 2A6, with greater armour protection, developed under a program of co manufacture between the industries of Spain and Germany. The program is developed within the frame of collaboration decided in 1995 between the Ministries of Defence of both countries, in which also was included the cession of use by a period of five years of 108 Leopard 2A4 from the German Army to the Spanish Army. However, this cession was extended up to 2016, and after that those tanks will be the sole property of the Spanish Army, as has been made public on 24 January 2006, then having been paid a total of 15,124,014 euros in ten yearly installments, giving the Spanish coproperty from 2006. In 1998, the Spanish government agreed to contract 219 tanks of the Leopard 2E line, 16 recovery tanks Leopard 2ER (Bufalo) and 4 training vehicles. They chose Santa Bárbara Sistemas as the main contractor. The program, with a budget of 1,939.4 million Euros, includes also the integrated logistical support, training courses for crew instructors and maintenance engineers and driving, turret, maintenance, aiming and shooting simulators. Deliveries of the first batch began in 2004 and should complete in 2008.
Leopard 2 PSO
This new variant Leopard 2 PSO (Peace Support Operations) is designed specially for urban warfare which peacekeeping operations have encountered more and more. Therefore the Leopard 2 PSO is equipped with more effective all-around protection, a secondary weapons station, improved reconnaissance ability, a bulldozer blade, a shorter gun barrel, non-lethal armament, close-range surveillance ability (through camera systems), a searchlight and further changes to improve its perseverance and mobility, not too dissimilar to the Tank Urban Survival Kit for the American M1A2 Abrams.
Leopard 2 140mm
As the 1990s began, Rheinmetall began developing a 140 mm smoothbore cannon as a future tank cannon. This was intended to counter new developments in Soviet-bloc armoured fighting vehicles, most especially persistent rumours that the next-generation Soviet main battle tank would be armed with either a 135 mm or 152 mm cannon. This program was contemplated as the third stage in the KWS program of modernizing Leopard 2 tanks. KWS I was the replacement of the L44 120 mm cannon with the 55-calibre model, KWS II was a modernization program that became the Leopard 2A5 (q.q.v.), and KWS III would have replaced the main armament with the new 140 mm cannon. The KWS III was not adopted then, but development continued on the 140 mm weapon system, with Rheinmetall coordinating with Royal Ordnance from the UK and GIAT from France.