Marmara region in the context of "Aegean Region, Turkey"

East Thrace or Eastern Thrace, also known as Turkish Thrace or European Turkey, is the part of Turkey that is geographically in Southeast Europe. Turkish Thrace accounts for 3.03% of Turkey's land area and 15% of its population. The largest city is Istanbul, which straddles the Bosporus between Europe and Asia. East Thrace is of historic importance as it is next to a major sea trade corridor and constitutes what remains of the once-vast Ottoman region of Rumelia. It is currently also of specific geostrategic importance because the sea corridor, which includes two narrow straits, provides access to the Mediterranean Sea from the Black Sea for the navies of five countries: Russia, Ukraine, Romania, Bulgaria, and Georgia. The region also serves as a future connector of existing Turkish, Bulgarian, and Greek high-speed rail networks.Due to the guest worker agreement with Turkey and Germany, some Turks in Germany originally come from Eastern Thrace, mostly from the Kırklareli Province.

The Central Anatolia region (Turkish: İç Anadolu Bölgesi) is a geographical region of Turkey. The largest city in the region is Ankara, the capital of Turkey. Other big cities are Konya, Kayseri, Eskişehir, Sivas, Aksaray and Kırşehir.

Located in Central Turkey, it is bordered by the Aegean region to the west, the Black Sea region to the north, the Eastern Anatolia region to the east, and the Mediterranean region to the south. It also shares a very slight border with the Marmara region in Bilecik Province.

Bursa Province (Turkish: Bursa ili) is a province and metropolitan municipality in Turkey along the Sea of Marmara coast in northwestern Anatolia. It borders Balıkesir to the west, Kütahya to the south, Bilecik and Sakarya to the east, Kocaeli to the northeast and Yalova to the north. Its area is 10,813 km, and its population is 3,194,720 (2022). Its traffic code is 16.

Almost all of Bursa Province (including the city of Bursa) is in the Marmara region, but the districts of Büyükorhan, Harmancık, Keles and Orhaneli are in the Aegean Region.

The automotive industry in Turkey plays an important role in the manufacturing sector of the Turkish economy. The companies operating in the Turkish automotive sector are mainly located in the Marmara region, especially Bursa.

In 2023, Turkey produced 1,486,393 motor vehicles, ranking as the 13th largest producer in the world (production peaked at 1,695,731 motor vehicles in 2017, when Turkey also ranked 13th). Turkish automotive companies like TEMSA, Otokar and BMC are among the world's largest van, bus and truck manufacturers. Togg, or Turkey's Automobile Joint Venture Group Inc. is the first all-electric vehicle company of Turkey. With a cluster of car-makers and parts suppliers, the Turkish automotive sector has become an integral part of the global network of production bases, exporting more than $35 billion worth of motor vehicles and components. In 2017, nearly 85% of exports went to Europe. Global car manufacturers with production plants include Tofaş, Oyak-Renault, Hyundai Assan Otomotiv, Toyota Motor Manufacturing Turkey, Ford Otosan.

The geographical regions of Turkey comprise seven regions (Turkish: bölge), which were originally defined at the country's First Geography Congress in 1941. The regions are subdivided into 31 sections (Turkish: bölüm), which are further divided into numerous areas (Turkish: yöre), as defined by microclimates and bounded by local geographic formations.

"Regions" as defined in this context are merely for geographic, demographic, and economic purposes and do not refer to an administrative division.