Two teenagers among five killed on deadly day on NSW roads

Teenage boys killed in crash at McGraths Hill in Sydney's north-west on Monday night as state's death toll soars

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Two teenage boys have been killed and another seriously injured in a crash in Sydney's north-west, with three people also killed in crashes on regional NSW roads.

Emergency services were called to Windsor Road at McGraths Hill about 9.40pm on Monday after reports a Nissan 200SX sports car had hit a power pole.

Two 17-year-old boys, who were passengers, were critically injured and died at the scene, police said.

The P-plate driver, also 17, was treated by paramedics for chest and internal injuries before being taken to Westmead hospital, where he is reported to be in a stable condition.

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Police were told the car carrying the teenagers lost control before striking a Ford Falcon from behind and leaving the road before hitting the pole.

Crash investigation unit commander Jason Hogan said police had been advised that speed might have been a factor in the crash.