Coaches were built by Rotem and specialist diesel-hydraulic power packs were built by MTU Friedrichshafen (engine) and Voith (transmission system).
Hyundai Rotem announced on November 11, 2008, that it had signed a €580 million contract to supply the rolling stock for the Marmaray cross-Bosphorus tunnel project in Istanbul.
Hyundai | Hyundai Motor Company | Hyundai Development Company | J.R. Rotem | Hyundai Merchant Marine | Jeonbuk Hyundai Motors | Hyundai Sonata | Hyundai Rotem | Hyundai Santa Fe | Hyundai Heavy Industries | Hyundai Group | Hyundai Elantra | Hyundai i10 | Hyundai Corporation | Hyundai Accent | Beijing Hyundai | Yuval Rotem | Hyundai Tournament of Champions | Hyundai Starex | Hyundai i30 | Hyundai i20 | Hyundai Getz | Hyundai Genesis | Hyundai Engineering & Construction | Hyundai Asan |
The Government announced in December 2008 that Bombardier, with its Turbostar design, was one of the pre-qualified bidders (along with CSR of China, CAF of Spain and Rotem of South Korea) for the first 200 DMU vehicles of its planned 1300 new carriages.
Initially the bids by Bombardier and Siemens, Alstom Projects India Ltd and consortium comprising BEML, Mitsubishi and Hyundai Rotem were shortlisted to supply the rolling stock and coaches.