BMP-23 vs BTR-4: Specs Compared

FORCETALLY

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AArmoured vehicles

BMP-23

Infantry fighting vehicle

Credit

Sgt. Megan Zander · Public domain · Resized · Public domain · Source ↗ · Modified

BArmoured vehicles

BTR-4

Infantry fighting vehicle

Credit

Artemis Dread · CC BY-SA 4.0 · Resized · CC BY-SA 4.0 · Source ↗ · Modified

First system

Second system· Armoured vehicles only

At a glance

Side by side

Length comparisonOne shared metre scale

BMP-23Length

7.28 m

Length source ↗

BTR-4Length

7.76 m

Length source ↗

Lengths retain their source configuration and measurement scope.

BMP-23larger figure on 1 of 4

Width+4%

BTR-4larger figure on 3 of 4

Length+7%
Height+19%
Speed+77%

Counts only measures both sources give with the same scope. A larger figure is not a better system.

True scale

Compare in 3D

BMP-23 × BTR-4

Side by side. From every angle. A human reference for perspective.

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BMP-23Exterior shape

BTR-4Exterior shape

Dimensions, sources & model information

Model dimensions — scaled from a sourced figure; other values approximate
Model	Length	Width / span	Height
BMP-23	≈ 7.28 m	≈ 3.05 m (Width)	≈ 2.64 m
BTR-4	≈ 7.76 m	≈ 2.93 m (Width)	≈ 3.5 m

BMP-23

Scaled uniformly to the sourced length of 7.28 m. The width was fitted to the sourced 3.05 m. Not an official model or a measured survey.

BMP-23 — Wikipedia (revision 1347537529) ↗ · accessed 2026-09-28

BTR-4

Scaled uniformly to the sourced length of 7.76 m. The width was fitted to the sourced 2.93 m. Not an official model or a measured survey.

BTR-4 — Wikipedia (revision 1370200219) ↗ · accessed 2026-09-28

The human reference is a generic 1.75 m figure. Models describe external size, not combat performance.

Measured figures

Head to head

18 of 33 rows sourced on both sides

7.28m

7.76m

Length+7%

All recorded figures & sources

7.28 m

Length

Single source

7.28 m^[source]

7.76 m

Length

Single source

Configuration

Details

BMP-23 and BTR-4 configuration
Specification	BMP-23	BTR-4
Type	Infantry fighting vehicle^[source]	Infantry fighting vehicle^[source]
Place of origin	Bulgaria^[source]	Ukraine^[source]
Armor	>20 mm^[source]	Welded steel^[source]
Main armament	23 mm automatic cannon 2A14 9K111 ATGM "Fagot"^[source]	2A72 30 mm (1.2 in) autocannon^[source]

Secondary armament	7.62 mm machine gun ( PKT )^[source]	7.62 mm (0.300 in) coaxial machine gun x4 anti-tank missiles OR x2 anti-tank missiles and 30 mm (1.2 in) automatic grenade launcher^[source]

Power/weight	20.7 hp/tonne^[source]	28.6 hp/t (with anti-bullet protection) 20 hp/t (with additional protection)^[source]

Suspension	torsion bar^[source]	wheeled 8×8^[source]

Role	Bulgarian infantry fighting vehicle^[source]	amphibious 8×8 wheeled infantry fighting vehicle (IFV)^[source]

Source manufacturer statement	The hull is based on that of the Soviet 2S1 self-propelled howitzer (also produced by Bulgaria) with thicker armour and a more powerful diesel engine , which is itself based on a stretched MT-LB chassis.^[source]Only the subject, component or variant named in this passage; unresolved names do not create a manufacturer identity	—

Source measurement	The turret of the BMP-23 is armed with a 23-mm autocannon 2A14 from the air-defence gun ZU-23-2 with 600 rounds, and initially the 9M14 Malyutka ATGM was used however this was later replaced on the BMP-23D modernization with the 9K111 Fagot ATGM. There is also a coaxial PKT machine gun. As the BMP-30 variant uses a turret from the BMP-2 it has no ATGMs and uses the 2A42 autocannon.^[source]BMP-23 · Design / Armament; only the objects and conditions stated in this passage BMP-23D - Upgraded variant with 9K111 Fagot ATGM and 81mm smoke grenade launchers.^[source]BMP-23 · Variants; only the objects and conditions stated in this passage	The BTR-4 is a more flexible design than the older BTR-60/70/80s, as the altered layout makes it easier to adapt the vehicle to specialized roles. The vehicle can be armed according to customer requirements. The prototype is armed with the locally designed New Armament Module, which consists of one 30mm 2A72 automatic cannon, a 7.62mm coaxial machine-gun, up to four 9P135M Konkurs or Baryer anti-tank missiles (two on each side of the turret), and one 30mm automatic grenade launcher (fitted in place of the AT missiles on one left-hand side of the turret). It can be fitted with different turret weapons modules including the GROM module, PARUS module, SHTURM-M module, SHKVAL module, and the BAU 23x2 module.^[source]BTR-4 · Description; only the objects and conditions stated in this passage The BTR-4 has a maximum speed of 110 km/h. It can cross water obstacles at a speed of 10 km/h. The vehicle is powered by a 3TD diesel engine with 500 hp. There are reports of vehicles being hit by several RPG rounds and multiple small-arms fire with no consequences. Slat armor can be fitted for maximum protection against RPG attacks.^[source]BTR-4 · Description; only the objects and conditions stated in this passage Armament: 1× 30 mm 2A72 automatic cannon 1× 7.62 mm coaxial machinegun 4× 9P135M Konkurs or Baryer AT missiles (optional 1× 30 mm automatic grenade launcher with reduction to 2× AT missiles)^[source]BTR-4 · Weapons modules; only the objects and conditions stated in this passage Armament: 1× 30 mm automatic cannon 1× 30 mm automatic grenade launcher 1× 7.62 mm coaxial machine gun 4× 9P135M Konkurs or Baryer AT missiles^[source]BTR-4 · Weapons modules; only the objects and conditions stated in this passage Armament: 1× 30 mm automatic cannon 1× 7.62 mm coaxial machine gun 4× 9P135M Konkurs or Baryer AT missiles (optional 1× 30 mm automatic grenade launcher with reduction to 2× AT missiles)^[source]BTR-4 · Weapons modules; only the objects and conditions stated in this passage Armament: 2× 23×152 mm automatic cannons 1× 7.62 mm coaxial machine gun^[source]BTR-4 · Weapons modules; only the objects and conditions stated in this passage Armament: 1× TKB-01-1 12.7 mm machine gun^[source]BTR-4 · Weapons modules; only the objects and conditions stated in this passage Armament: 1× 120 mm cannon 1× 12.7 mm anti-aircraft machine gun (turret ring mount)^[source]BTR-4 · Weapons modules; only the objects and conditions stated in this passage

Source measurement

The turret of the BMP-23 is armed with a 23-mm autocannon 2A14 from the air-defence gun ZU-23-2 with 600 rounds, and initially the 9M14 Malyutka ATGM was used however this was later replaced on the BMP-23D modernization with the 9K111 Fagot ATGM. There is also a coaxial PKT machine gun. As the BMP-30 variant uses a turret from the BMP-2 it has no ATGMs and uses the 2A42 autocannon.^[source]BMP-23 · Design / Armament; only the objects and conditions stated in this passage

BMP-23D - Upgraded variant with 9K111 Fagot ATGM and 81mm smoke grenade launchers.^[source]BMP-23 · Variants; only the objects and conditions stated in this passage

The BTR-4 is a more flexible design than the older BTR-60/70/80s, as the altered layout makes it easier to adapt the vehicle to specialized roles. The vehicle can be armed according to customer requirements. The prototype is armed with the locally designed New Armament Module, which consists of one 30mm 2A72 automatic cannon, a 7.62mm coaxial machine-gun, up to four 9P135M Konkurs or Baryer anti-tank missiles (two on each side of the turret), and one 30mm automatic grenade launcher (fitted in place of the AT missiles on one left-hand side of the turret). It can be fitted with different turret weapons modules including the GROM module, PARUS module, SHTURM-M module, SHKVAL module, and the BAU 23x2 module.^[source]BTR-4 · Description; only the objects and conditions stated in this passage

The BTR-4 has a maximum speed of 110 km/h. It can cross water obstacles at a speed of 10 km/h. The vehicle is powered by a 3TD diesel engine with 500 hp. There are reports of vehicles being hit by several RPG rounds and multiple small-arms fire with no consequences. Slat armor can be fitted for maximum protection against RPG attacks.^[source]BTR-4 · Description; only the objects and conditions stated in this passage

Armament: 1× 30 mm 2A72 automatic cannon 1× 7.62 mm coaxial machinegun 4× 9P135M Konkurs or Baryer AT missiles (optional 1× 30 mm automatic grenade launcher with reduction to 2× AT missiles)^[source]BTR-4 · Weapons modules; only the objects and conditions stated in this passage

Armament: 1× 30 mm automatic cannon 1× 30 mm automatic grenade launcher 1× 7.62 mm coaxial machine gun 4× 9P135M Konkurs or Baryer AT missiles^[source]BTR-4 · Weapons modules; only the objects and conditions stated in this passage

Armament: 1× 30 mm automatic cannon 1× 7.62 mm coaxial machine gun 4× 9P135M Konkurs or Baryer AT missiles (optional 1× 30 mm automatic grenade launcher with reduction to 2× AT missiles)^[source]BTR-4 · Weapons modules; only the objects and conditions stated in this passage

Armament: 2× 23×152 mm automatic cannons 1× 7.62 mm coaxial machine gun^[source]BTR-4 · Weapons modules; only the objects and conditions stated in this passage

Armament: 1× TKB-01-1 12.7 mm machine gun^[source]BTR-4 · Weapons modules; only the objects and conditions stated in this passage

Armament: 1× 120 mm cannon 1× 12.7 mm anti-aircraft machine gun (turret ring mount)^[source]BTR-4 · Weapons modules; only the objects and conditions stated in this passage