A driver has died of injuries suffered in a crash into a car dealership.

The 59-year-old man was driving on the Pacific Hwy at Roseville, on Sydney’s Upper North Shore, when the car left the road and smashed into the business about 6.10pm on Saturday.

7NEWS.com.au understands the dealership was SVM Kia Roseville.

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The driver was fighting for life, and first helped by a passerby.

Fire and Rescue NSW crews arrived next and performed CPR on the man until NSW Ambulance arrived.

Paramedics then treated the man at the scene and took him to the Royal North Shore Hospital in a critical condition.

He died in hospital on Thursday, NSW Police said on Friday.

Investigations into the crash are ongoing and a report will be prepared for the coroner.