Complete brake failure when exiting freeway resulted in crashing into a concrete barrier and guardrail at a high rate of speed before impacting another vehicle. Vehicle has an electronic emergency brake that could not be engaged. Vehicle could not be put in reverse or park to slow impact. There were three prior issues with the vehicle regarding brakes and acceleration. The car had less than 250 miles on it. Issue was reported to the dealer from where it was purchased after the collision. Vehicle is likely totaled pending an assessment by the insurance company. As the driver I had the choice of a direct impact with a string of cars stopped at the end of the off-ramp at a high rate of speed or hitting the barrier wall to slow my momentum. I chose the barrier wall to reduce the risk of the collision upon others.