Seoul Metropolitan Subway rolling stock

• Created from newer cars used to extend first generation 1000 series trains to ten cars.
• Trains 111~114 were originally numbered as trains 113/114~119/120.
  • Train 1-11 used four powered cars built in 1999 when it was train 113/114.
  • One driving car of former train 113/114 was written off following an accident in 2002, so a new driving car was built in 2004, and the train returned to service as train 1-11.
• Limited to local service between Yangju and Incheon/Seodongtan due to lower maximum speeds.

• Trains 4-01~4-26 use DC pantographs and operate between Jinjeop and Sadang only, while trains 4-51~4-71 use AC pantographs and can operate on the full length of Line 4.
  • Trains 4-01~4-09 & 4-51~4-63 are first batch trains built in 1993, while trains 4-10~4-26 & 4-64~4-71 are second batch trains built in 1994.
  • Trains 4-51 was retrofitted with propulsion systems from Dawonsys.
  • Trains 4-66, 4-70, and 4-71 were retrofitted with propulsion systems from Woojin Industrial Systems.
• Train 4-61 was retired after an accident at Sanggye station.
• Trains 4-16, 4-65, 4-67, and 4-69 are retired because of various issues.^{[citation needed]}

Successor trains on the way.

• Formerly numbered 2-30~2-46, 2-49, 2-51~2-54, and 2-70~2-72.
• Train 341-04 utilizes all non-driving cars from Class 311000 train 311-01, and several trains utilize some non-driving cars from Class 311000 train 311-02.
• Train 341-02 is retired because of various issues, and train 341-23 was retired after an accident at Sanggye station.

successor trains on the move, trains will be retired soon

• Formerly numbered 2-47~2-48, 2-50, 2-55~2-69, and 2-73~2-76.
• Relegated to service between Cheongnyangni and Gosaek.

• Trains 5-02 was retrofitted with propulsion systems from Dawonsys.
• Train 5-18 is retired because of various issues.

• Train 8-15 is retired because of various issues.

• All trains are operated by Korail but managed by Seoul Metro's Jichuk depot.
• Currently being retired.

• Formerly numbered 5-01~5-42.
  • Train 5-19 was damaged in an accident. Eight cars in the train were converted to two Class 319000 trains, while the other two were scrapped.
• Trains 311-39 and 311-41 utilize three (in total) unpowered Korail Class 341000 cars.
• Trains 311-01~311-06 are retired because of various issues.

• Trains 1-01~1-06 are first batch trains built between 1998 & 1999, while trains 1-07~1-10 are second batch trains built in 2002.
  • Trains 1-05~1-06 use unpowered cars from first generation Seoul Metro 1000 series trains 101/102 & 103/104
  • Trains 1-09~1-10 use unpowered cars from first generation Seoul Metro 1000 series trains 121/122 & 123/124.
• Limited to local service between Yangju and Incheon/Seodongtan due to lower maximum speeds.

• Formerly numbered 2-77~2-81.
• Train 341-26 was retrofitted with IGBT systems.

• Order included trains formerly numbered 8-21 and 8-22.
  • Train 7-63 was formed from train 8-21 and two non-driving cars from train 8-22.
  • Three other cars (one driving car & two non-driving cars) from train 8-22 are utilized in train 7-52, was retired.
  • The remaining driving car from train 8-22 was repurposed into a mockup for the SR-series.

• Rheostat controls.
• All trains were reorganized and lengthened to 10-car trains by newer cars built in 1989.
  • All trains received two unpowered cars each.
  • Trains 115/116~119/120 and 129/130~131/132 received eight powered cars each, and train 113/114 received two powered cars.
  • The newer cars were rebuilt & re-organized as current trains 1-11~1-16 or used as unpowered cars in second generation 1000-series trains 1-05~1-06 and 1-09~1-10.
• Several trains temporarily ran on Line 2 when the line first opened due to a shortage of cars for the line.

• Rheostat controls.
• The trailer cars of trains 1-29~1-35 were rebuilt into trains 1-88~1-94 and were retired in 2006.
• Train 1-02 was involved in an accident in 1984. One driving car and one powered car were scrapped. The other driving car was transferred to train 1-14 after that train was involved in a separate accident. Two formerly surplus driving cars built in 1979 and a new powered car built in 1986 were utilized to replace the scrapped and transferred cars.
• Many cars were refurbished and connected to second generation Korail Class 1000 trains.
• Trains 1-39~1-41 received second generation Korail Class 1000 cars built in 1989 to become 10-car trains. The newer cars were linked in second generation trains or utilized as unpowered cars in Korail Class 311000 trains 311-39~311-41.

• Controls & manufacturing years are as following:
  • 2-01~2-14: rheostat controls, 1980–1982
  • 2-15~2-39: chopper controls from MELCO, 1983
  • 2-61~2-75: chopper controls from GEC, 1983-1984
• Trains 2-01~2-38 were built as four-car trains, and trains 2-39 and 2-61~2-75 were built as six-car trains. Most trains received newer cars as following:
  • Trains 2-01~2-08 and 2-15~2-38 received two unpowered cars built in 1986 to become six-car trains and train 2-09 received two cars built in 1990 to become a six-car train. Select 1986-built cars and all 1990-built cars were rebuilt and utilized as unpowered cars in current trains 2-45~2-48, but the retained 1986-built cars have since been replaced.
  • Trains 2-28~2-38 each received another four cars built in 1991 to become 10-car trains, and trains 2-15~2-27 & 2-39 each received four second generation cars built in 1992 to become 10-car trains. All 1991 and 1992-built cars, except for two cars in train 2-38, were rebuilt and either re-organized as the second iteration of trains 2-32~2-39 (retired 2020) or used as unpowered cars in third generation 2000 series trains 2-23~2-31.
  • Trains 2-61~2-75 were reorganized and received newer cars built in 1991 and 1993 to become 10-car trains. The newer cars were rebuilt and either re-organized as the second iteration of trains 2-73~2-77 (retired 2020) or used as unpowered cars in current trains 2-46~2-48 & third generation 2000-series trains 2-71~2-72.
  • Trains 2-01~2-05 each received four second generation cars built in 1993 to become 10-car trains. The newer cars were rebuilt and re-organized as current trains 2-45~2-48 and 2-56.
  • The second iteration of train 2-39 was involved in an accident in Sangwangsimni Station. Four cars were retired and replaced with four salvaged cars from train 2-12 (the other train involved in the accident) to form a new train 2-39.^[1]
• Trains 2-06~2-09 were renumbered to trains 2-45~2-48 and trains 2-12~2-14 were renumbered to trains 2-58~2-60 in 2005 when trains 2-45~2-53 took their former numbers.

• All cars used chopper controls from MELCO.
• Original built as six-car trains; all trains received four cars built in 1991 to become 10-car trains.
• Trains 2-45~2-52 were renumbered to 2-06~2-13.
• Train 2-12 was wrecked in an accident in Sangwangsimni Station with train 2-39. Four cars were salvaged to form a new train 2-39 (since retired).^[1]

• Chopper controls from GEC.
• Line 4 trains 401/402~429/430 and 447/448~453/454 were reorganized and renumbered to Line 3 trains 3-01~3-15 and 3-41~3-44.
• All Line 3 trains and Line 4 trains 431/432~445/446 were reorganized and renumbered to the first iteration of Line 2 trains 2-76~2-77 and Line 3 trains 3-16~3-40. The driving cars of the Line 4 trains were converted to unpowered cars to extend some of the other trains to ten cars.
  • There were no trains with numbers ending from 01 to 30 initially due to numbering conflicts at the time.
• Many trains received newer cars built between 1990 and 1993 to become 10-car trains. The newer cars were either scrapped or rebuilt & further reorganized into current trains 3-16~3-20 and 3-41~3-44.

• Rheostat controls.
• Trains 1-53, 1-57, 1-63, and 1-65 were not overhauled and were retired in 2006.
• Trains 1-42~1-43 had their unpowered cars rebuilt as driving cars 1082, 1182, and 1087. Train 1-87 was retired in 2001 and train 1-82 was retired in 2006.

• Chopper controls.
  • Train 2-53 (renumbered to 2-14) was built in 1993 and uses MELCO propulsion systems.
  • Trains 2-93~2-95 were built in 1994 and use GEC propulsion systems.

• Rheostat controls.
• Expected to retire in 2022, but immediately retired in April 2020 due to a derailment involving train 1-83.

• GEC propulsion systems.
• Line 2 trains 2-85~2-92 and all Line 3 trains originally ran on Line 4 as trains 455/456~481/482.
• Line 2 trains 2-78~2-84 originally ran on Line 3 as trains 381/382~393/394.
• Line 3 trains originally ran on Line 4 as trains 471/472~481/482.
• Six cars in trains 2-78~2-84 and two cars in train 3-48 were manufactured in 1991 by Hanjin Heavy Industries.
• Line 2 trains retired in 2020, while Line 3 trains retired in September 2022.

• GEC propulsion systems.
• Created from newer cars (built from 1990 to 1993) that were used to extend first generation wide-width trains 10 cars.
• All trains retired in September 2022.

• Created from newer cars (built in 1990 and 1993) that were used to extend first generation trains 2-01~2-05 and 2-09 to 6 or 10 cars.
• Trains 2-45~2-48 are 6 cars long and run on the Sinjeong Branch shuttle service.
  • Train 2-45 uses unpowered cars (built in 1990) salvaged from first generation train 2-09 in 2005.
  • Trains 2-46~2-48 use unpowered cars (built in 1993) salvaged from first generation trains 2-61~2-75 in 2008. They originally used unpowered cars (built in 1986) salvaged from first generation trains 2-01, 2-04, and 2-05.
• Train 2-56 was 4 cars ran on the Seongsu Branch shuttle service.
• Seongsu Branch trains retired.
• All Sinjeong Branch trains retired in 2023.