Hyundai-Kia J platforms

The J platform series are platforms developed by Hyundai and Kia for its range of compact automobiles since 1995.

J2 platform

Hyundai Elantra (RD/RD2)
Hyundai Tiburon/Coupe (RD/RD2)

J3 platform

Hyundai Elantra/Avante (XD)
Hyundai Matrix/Lavita (FC)
Hyundai Tiburon/Coupe II (GK)
Hyundai Tucson (JM)
Kia Cerato/Spectra (LD)
Kia Sportage (JE)
Kia Carens/Rondo (UN)

J4 (HD) platform

Source:

Hyundai Elantra/Avante (HD)
Hyundai i30 (FD)
Kia Cee'd (ED)
Kia Forte/Cerato (TD)

J5 platform

Source:

Hyundai Elantra/Avante (MD)
Hyundai i30/Elantra GT (GD)
Hyundai Tucson/ix35 (LM)
Hyundai ix35 (NU)
Kia Sportage (SL)
Kia Sportage (NP)
Kia Carens/Rondo (RP)
Kia Cee'd (JD)
Kia Forte/Cerato (YD)
Kia Soul (PS)

J6 platform

Hyundai Elantra (AD)
Hyundai Veloster (JS)
Kia Forte/Cerato (BD)

Eco-Car platform