Friends are remembering two teenagers as “beautiful boys”, after they were killed in a car crash at McGraths Hill in Sydney’s north-west.

Matthew Simpson, 16, and Addison Bhimjiani, 17, were passengers in a car being driven by another 17-year-old, when they ploughed into a power pole on Windsor Road on Monday night just before 10pm.

The driver survived the crash and was taken to Westmead Hospital for chest and internal injuries in a stable condition, according to NSW Police.

The trio were travelling in a Nissan 200SX, which police allege had initially crashed with a Ford Falcon before hitting the pole.

More than 40 grieving teenagers visited the crash site on Tuesday, with many sitting where the fatal crash happened as they cried and hugged each other.

In vision shared to social media, many laid bright floral bouquets and candles to create a makeshift memorial around the power pole.

Several of their friends took to social media to share their grief.

“To think that your [sic] actually gone makes me sick I can’t believe it… I wish it wasn’t real that your [sic] gone,” Jack Bond wrote on Instagram.

“To everyone out there thinking there [sic] untouchable your [sic] not and because of a poor decision has lead [sic] to losing not only a friend but a brother.”

Messages in memory of Matthew Simpson have called him a “cheeky boy” and an “angel”. Many expressed their devastation, saying he was loved by everybody.

Similar sentiments were shared for Addison Bhimjiani who was described as a “beautiful soul”.

There were five deaths on the state roads in the past 24 hours.

NSW Police Inspector Jason Hogan said the deaths including that of the teen boys were due to “driver behaviour”.

“They are not related to, any other factor except people making poor decisions on their rides, not driving due to conditions, and causing serious injury collisions,” he said.

“It is reported to police that speed might be a factor.

“People behind the wheel need to take responsibility for their driving behaviour interactions. Drive to the conditions and make sure that you get home to your loved ones.”

The driver of the Falcon called triple-0 and underwent mandatory blood and urine testing.

The site of the crash has been declared a crime scene and investigations will continue.