Check Engine Light On problems of the 2018 Volkswagen Tiguan

I purchased the car brand new iat the end of 2018. At the end of 2019 the car now needs new brakes and has less than 19,000 miles. The car shakes when you break. The dealership stated usually brakes and rotors last 30,000 and cited "common causes" for needing new breaks. The dealership stated they would cover labor at good will to replace brakes and rotors and then came back that would cover 60% and provided me 3 different amounts for a total. Additionally, in December 2019, the check engine light came on after driving through a dangerous intersection turning left the car started to stutter and was shaking, after they reviewed it, they stated that the car had "misfired" and not all 4 engines started at the same time, only 3 of the engines did. I am requesting that the car be reviewed for compliance and safety regarding the brakes and engine. Additionally, I am requesting that Volkswagen cover the cost and labor of replacing brakes and rotors.

On multiple occasions, subject vehicle displayed check engine light and epc light at random intervals, causing car to unexpectedly be limited to 4,000 rpm and unable to accelerate past 40mph. As a result, this put driver in extremely unsafe situations and endangered safety of passengers and fellow drivers, particularly on highway. First encountered at 34,000 miles on odometer. Persisted through 41,000 miles. Seconds before error is encountered, vehicle would run rough and undergo rough shifts. In addition, vehicle also suffered with sluggish acceleration from stop. Vehicle taken to service center multiple occasions. On first encounter, technician instructed simply to reset vehicle. When taken second time, code p0203 injector short circuit cyl 3 was diagnosed and engine harness replaced. However, issue continued. When taken third time, injector harness replaced.

The vehicle has severe acceleration problem, with uneven and unpredictable acceleration when starting the vehicle from a stop. The problem developed after the vehicle was 2 weeks old. The vehicle was taken into the dealership after the check engine light turned on. The dealership stated it was an issue in the secondary air system, but they were not sure what and could not fix it at that time. The check engine light then turned off. The vehicle was taken in to two subsequent dealerships with the same issue, but the dealership stated the car was reporting no problem, and the check engine light was not turning on. A third dealership found a faulty valve in the secondary air system, despite the car reporting no issues and the check engine light failing to be lit. Despite the replacement of the part, the vehicle still has unpredictable and unacceptable acceleration, which poses a severe safety risk when pulling out into traffic. When I expect the vehicle to accelerate, it does so at an extremely tepid pace, causing traffic to need to slow rapidly behind the vehicle. Other time it begins to accelerate normally, and then stalls in acceleration. This again poses a safety risk to the driver and surrounding traffic.