You can print out the notarized official information and submit it to the court to prove that there is no so-called "navigation version". This is a navigator added on the basis of the leading version of the automobile trade company. Since they made it themselves, they must clearly remind you when they sell it to you. They need to prove it. If they can't prove that they have made a clear reminder, they can basically be considered as fraud. Besides, the contract text is originally the format text they drafted, and the other party should remind you.
In addition, you can sue to terminate the contract on the grounds of gross misunderstanding and obviously unfair.
In addition, you can also complain to the after-sales service management department of Dongfeng Nissan Company about the auto trade company.