YOU SAID:

They've renewed the contract until the end of 2014, despite not being able to put their branding on the cars.

INTO JAPANESE

彼らは、車にブランディングを置くことができなかったにもかかわらず、2014年末まで契約を更新しました。

BACK INTO ENGLISH

They renewed their contract until the end of 2014, even though they could not put branding on the car.

INTO JAPANESE

彼らは2014年末まで契約を更新したが、彼らは車にブランディングを置くことができなかった。

BACK INTO ENGLISH

They renewed their contracts until the end of 2014, but they were unable to put branding on the car.

INTO JAPANESE

彼らは2014年末まで契約を更新したが、彼らは車にブランディングを置くことができなかった。

BACK INTO ENGLISH

They renewed their contracts until the end of 2014, but they were unable to put branding on the car.