Hyundai Transys Inc. - Seongyeon Plant (Formerly Hyundai Dymos, Inc.)

Company Profile



105, Sindang 1-ro, Seongyeon-myeon, Seosan-si, Chungcheongnam-do, Korea

Business Overview

-A supplier of powertrains and seats under the Hyundai/Kia Motor Group. It was established in 2019 through the merger of the former Hyundai Dymos, which manufactured ATs, and the former Hyundai Powertech, which manufactured MTs and seats.

-The business is divided into a powertrain division and a seat division. The powertrain division accounted for 65% of sales, and the seat division accounted for 35% in the fiscal year ended December 2022.

-Market share in Korea (self-reported by the Company)

Market Share
FY ended Dec. 31, 2022 FY ended Dec. 31, 2021 FY ended Dec. 31, 2020
Transmissions (commercial vehicles) 37% 45% 60%
Axles (commercial vehicles) 77% 76% 88%
Transmissions (passenger cars) 70% 65% 59%
Axles (passenger cars) 43% 49% 69%
Seats 48% 47% 46%


-Unlisted (As of Dec. 31, 2022)
Main Shareholder Investment Ratio (%)
Hyundai Motor Company 41.1
Kia Corporation 40.4
Hyundai Mobis Ltd. 15.7
Total 97.2


Products Major car models
Passenger vehicle powertrain
3 in 1 EV Sedan (Small/Medium/Large), SUV (Small/Medium)
E-GDU Separate Type Ray, Soul, Avante, Ioniq, Kona, Nexo, Porter
E-GDU Integrated Type Ioniq5, Ioniq6, Ioniq5 N, EV6(GT), Niro, GV60, GV70, G80
AT 8-speed Passenger vehicle, SUV
AT 6-speed K5 HEV, K7 HEV, Sorento HEV, Tucson HEV, Sportage HEV
6-speed DCT Ioniq/Niro HEV (DCT based)
FF 8-speed Sonata, K5, Sorento, Santa Fe, Grandeur, K7,Crnival, Palisade, Telluride
FF 6-speed Avante, K3, Soul, Sonata, K5,Tucson, Sportage, Sorento, Santa Fe, Grandeur, K7
FF 5-speed DX7
FF 4-speed Pride, Stonic, i20
FR 8-speed Mohave, Genesis G70/80/90, K9, Stinger
FR 5-speed Porter, Bongo, Starex
Medium Medium sedan
Small Avante, K3, Soul, Venue, Seltos, ix25, Mistra
Light Morning, Ray, Accent, i20
DCT (Dual clutch transmission)
Wet 8-speed Sorento, Santa Fe, KonaN, VelosterN
Dry 7-speed Sonata, Avante, Tucson, Sportage
AMT (Automated manual transmission)
5-speed Morning (Europe)
IRS Santa Fe, Sorrento, Tucson, Sportage, Palisade, Telluride, Mohave, Genesis G70/G80/G90, K9, Stinger
IFS-IOP type Genesis G70/G80/G90
IFS-Tube type Mohave, Porter 4WD, Starex 4WD, KG Mobility G4 Rexton, Rextopn Sports
Built up Changan CX70, KG Mobility G4 Rexton, Rexton Sports, CHTC H2, SAIC MAXUS SV63, SGMW CN120S
Banjo Porter 2, Grand Starex, KG Mobility Rextopn Sports Kahn
4WD (Four-wheel drive)
EST 2-speed (Electric Shift Transfer case) Patriot, B40, Light Tactical Vehicle
EST 1-speed (Electric Shift Transfer case) Starex
PTU 2-axis Changan CS75/CS95, Dongfeng 580
PTU 1-axis Geely BOYUE
Commercial vehicle powertrain & ETC
FR 16-speed Trago Xcient (Tractor, Dump, Cargo)
FR 12-speed Trago Ancient  (Tractor, Dump, Cargo)
FR 10-speed Tractor
FR 6-speed Solarti(Bus/Truck/Van), Mighty 6 Speed(Mighty), Mega Truck, Unicity/UniBus(Express Bus), Cargo Truck, Dump, Mixer
FR 5-speed Mighty(Truck), County(Bus), Aerotown (MediumBus), Aero City/Green City(City Bus), UniBus(Express Bus)
AMT 12-speed Dump, Mixer, Tractor, Cargo
Banjo – Heavy Trago Xcient (Tractor, Dump, Cargo), Aero City/Green City (City bus), Unibus/Granbied(Exprees Bus), SuperAerocity (Low Floor City Bus)
Built-up Solarti
Banjo - Light Mighty (Truck), County (Bus)
Banjo - Medium Pavise (Truck), Aerotown (Bus)
Banjo - Heavy Trago Xcient (Cargo, Dump, Tractor), Aero City, Green City (City bus), UniBus/Granbird (Exprees Bus), SuperAeroCity (Low Floor City Bus)
Wheel-motor Drive System Electric Bus (elec city)
Hybrid Drive Unit Ultra-Low Floor / StandardCNG Bus
Luxury sedan Genesis G90 (Korea), Genesis G80 (Korea), Genesis G70 (Korea)
large size sedan Kia K9 (Korea), Hyundai GRANDEUR (Korea)
Medium sedan Hyundai SONATA (Korea), Kia Stinger (Korea)
Semi-Medium sedan Hyundai Lafesta (China), Hyundai i30(Czech Republic), Hyundai CELESTA(China), Hyundai Elantra (India), Kia K3 (Korea, Mexico)
Small sedan Hyundai Accent (India,Mexico), Hyundai i20(India), Hyundai HB20(Brazil), Kia RIO(Mexico)
Light sedan Hyundai i10 (India), Hyundai Aura (India), Hyundai Santro (India)
Luxury SUV Genesis GV80 (Korea), Genesis GV70 (Korea), Genesis GV60 (Korea) 
large size SUV Kia Carnival (India)
Semi-large size SUV Kia Mohave (Korea), Hyundai Kusto (China)
Medium SUV Hyundai Santa Fe (America, India, Indonesia), Kia Sorento (America)
Semi-Medium SUV Hyundai Tucson (Czech Republic, China, India), Hyundai ix35 (China), Kia Sportage (Korea, Slovakia)
Small SUV Hyundai Venue (India), Hyundai Creta (India, Brazil, Indonesia), Kia Seltos (Korea, India), Kia Soul (Korea)
EV Hyundai Ioniq6 (Korea)


Mar. 2001 Incorporated.
Feb. 2002 Signed a technological collaboration contract with Jatco of Japan.
Dec. 2002 Obtained an ISO 14001 certificate.
Jan. 2003 Obtained an ISO/TS 16949 certificate.
Oct. 2003 Established the Driving Test Center.
Nov. 2003 Commenced producing the rear-wheel drive AT.
Mar. 2005 Completed building the R&D Center.
Jun. 2007 Established the Hwaseong R&D Center.
Jun. 2008 Established Powertech America, Inc. in Georgia, USA.
Oct. 2008

Commenced producing the front-wheel drive 6-speed AT.
Accumulative production of AT reached 5 million units.
Jan. 2009 Obtained an ISO 27001 certificate.
Jun. 2009 Commenced producing the HEV-CVT.
Dec. 2009 Established the US factory.
Sep. 2010 Obtained a Quality 5 Star Certificate from Hyunda-Kia Group.
Nov. 2010 Established Hyundai Powertech (Shandong) Co., Ltd. in Shandong, China.
Feb. 2011 Commenced producing the rear-wheel drive 8-speed AT.
Dec. 2011 Accumulative production of AT reached 10 million units.
Completed building the China plant.
Aug. 2012 Commenced producing the Kappa-CVT.
Sep. 2013 Completed building the second China plant.
Sep. 2014 Established Hyundai Powertech Mexico S DE RL DE CV in Mexico.
Apr. 2016 Completed production plant in Nuevo Leon, Mexico.
Jan. 2019 Hyundai Dymos and Hyundai PowerTech merged to form Hyundai Transys

Supplemental Information 1

The Hyundai Motor Group's Ratio of Shareholding

(As of Dec. 31, 2022)

Hyundai Motor Group Correlation Chart

The Hyundai Motor Group's Ratio of Shareholding in Automotive Companies

(As of Dec. 31, 2022)

Name of group company


Company in which the company holds shares


Hyundai Kefico

Hyundai Motor - 33.88% - 41.13% 25.35% 100.00%
Kia Corporation - - 17.42% 40.43% 13.44% -
Hyundai Mobis 21.43% - - 15.74% - -
Hyundai WIA - - - 1.88% - -
Hyundai Steel - - 5.84% - - -
Hyundai GLOVIS - - 0.70% - - -

Note: Numbers in parentheses ( ) in the text indicate negative figures that refer to declines or losses.

>>>Business Report FY ended Dec. 31, 2013
>>>Business Report FY ended Dec. 31, 2014
>>>Business Report FY ended Dec. 31, 2015
>>>Business Report FY ended Dec. 31, 2016
>>>Business Report FY ended Dec. 31, 2017
>>>Business Report FY ended Dec. 31, 2018
>>>Business Report FY ended Dec. 31, 2019
>>>Business Report FY ended Dec. 31, 2020
>>>Business Report FY ended Dec. 31, 2021