2018 Ford Focus vehicle speed control problems

“when the vehicle accelerates too quickly or up a very gradual hill, barely any slope, it will slow to a stop. this is in line with the current recalls with other Ford focus 2018s likely caused by the Canister Purge Valve. it has the exact same symptoms, poor fuel economy, rough idling so much so the entire vehicle shakes, and the dangerous part- stalling. I have now stalled 4 times and have been in and out of multiple mechanics for this issue and no one can seem to identify the root and it's getting costly. now they are saying it might be the canister purge valve but if it is I think it should be covered despite my vin not being perfectly aligned because it's ultimately the same issue with the same vehicle, make and model.”

“"My 2018 Ford Focus was traveling uphill at highway speed. I fully depressed the accelerator because the vehicle was losing speed. The vehicle did not respond with additional acceleration and subsequently continued to lose speed despite the accelerator remaining fully depressed. The dealership inspected the vehicle and told me that the engine is not powerful enough for sustained uphill driving and that the vehicle performed as designed. I am reporting this because I am concerned about the loss of ability to maintain speed despite full accelerator input and whether this constitutes a safety defect."”

“The contact owns a 2018 Ford Focus. The contact stated that while driving approximately 65 - 70 MPH with the cruise control activated, the vehicle suddenly decelerated and then accelerated to the desired cruise control setting. The failure had occurred several times. Approximately 2 weeks later, while driving approximately 30 MPH, the vehicle stalled, and the hazard lights were activated. The vehicle was towed to the dealer, who diagnosed the vehicle with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and confirmed that the repair was not covered under warranty or recall. The failure mileage was approximately 150,000.”

“I was on my way to a 7-Eleven to get gas once I filled it up. Those engine started sputtering and it did that for a minute until it finally started. I got to my school and then once I needed to go to school to school, my car was not going above 11 mph and when I was trying to reverse, it would not accelerate while reversing.”

“My vehicle was inspected in order to determine why my vehicle is stalling, jerking, not going into reverse and giving a warning message that the car is overheating. My spouse and I were told the transmission control module needs to be replaced. Upon reading about my car's maje and midel, I learned this is a problem with 2018 Ford cars. It stalls and almost cuts off in traffic which is very dangerous”

“My 2018 Ford Focus (DPS6 dual-clutch automatic transmission) suffers from severe hesitation and shuddering when accelerating from a stop, especially under 10 mph. More concerning, the car has stalled multiple times while merging into traffic and during right turns at intersections. We can no longer safely take free right turns due to the risk of the car dying mid-merge. This poses an immediate safety hazard and mirrors known failure patterns in earlier Focus and Fiesta models. Ford previously extended warranty coverage for the same TCM defect in 2011–2016 models, but my 2018 — which uses the same DPS6 system — has been excluded without explanation. The dealership acknowledged the TCM failure but refused to cover the repair. Instead, they charged me $300 to tell me they would not perform the service Ford originally recommended (a fuel injector purge) and that I now need to replace the TCM entirely. This is a known, documented issue that Ford has admitted to in other years. My car has lost power four times in the last three months, and all signs point to this being the early stages of the same defect. Allowing this failure to persist without coverage or recall is…”