Four problems related to power train have been reported for the 2018 Subaru Impreza Wrx. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Subaru Impreza Wrx based on all problems reported for the 2018 Impreza Wrx.
When accelerating from a stop, the car is having trouble accelerating despite having the accelerator fully depressed. The engine sounds like it is roaring, but hardly any power is being produced. When the vehicle hits about 35-40mph, the engine surges and then full power is produced. It feels like potentially an issue with the turbo or the transmsission. This is creating a significant safety hazard as the vehicle is behaving unpredictable and could lead to an accident when having to accelerate into traffic or merge. The vehicle has already had 3 cvt transmission replacements under factory warranty. The vehicle currently has approximately 47,000 miles but is outside factory warranty now.
The transmission began leaking fluid and has experienced slippage while driving. I took the vehicle to hendrick Subaru in Feb. 2023 for diagnostics and was told the leak was unserviceable and needed replacement. I was told they detected minor slippage at the time. It is now June 2023 and the dealer is telling me that the transmission is not going to be replaced, but rather "resealed" and they are now claiming there is no record of it ever slipping and they cannot replicate it. Subaru took months to approve any type of repair so I was forced to drive my vehicle while it continued to leak transmission fluid, which could have potentially caused additional damage.
While driving vehicle the engine started knocking. Took to dealer under warranty and denied claim.
This issue occurs on acceleration , most noticeable when merging onto freeway from on ramp 1/2 throttle , the vehicle starts to accelerate normal then hits around 4200 rpm and the boost gauge goes nuts fluctuating up and down and the vehicle looses power , hesitates , surges ( like a flat spot ) then finally gets a little higher in rpm and it will pick up again through the rest of rpm gauge , most noticeable in lower gears ( mines a 6 speed manual , I have taken the car to dealer on 5/30/18 with 1380 miles on the odometer , huffines Subaru denton texas , tony the service manager drove my car and duplicated the complaint , he then proceeded to get another new wrx off the lot similar to mine and again duplicated the complaint ( so this is a known issue ) the dealer claims its just a design in the car , its very unsafe as you think you will get up to speed and then it hesitates which could cause an accident , the dealer did say they would open a case with Subaru techline which they did not , so I called Subaru customer service and filed a complaint , they call back 2 days later and tell me we spoke to dealer nothing we can do , so I proceeded to do an internet search and found numerous people complaining about the same issue on 17-18 wrx models , I currently have 2006 miles on the car and its still doing this , not sure if its a drive by wire , throttle map issue or a flaw in the factory tuning causing this but it needs to to be addressed and fixed , vehicle gives false sense of security on accelleration .
| Power Train problems | |
| Clutch Pedal/linkage problems |