The car swerves to the left without warning while driving,
The worst 2026 Ineos Grenadier problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Driver assistance2
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Driver assistance2
Recalls
No recalls on record for this model year.
Technical service bulletins for the 2026 Ineos Grenadier 5
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- In some vehicles the customer might experience a creaking sound coming from the rear of the central display
- An issue has been identified on a small percentage of the affected vehicles where there is potential...
- Battery failures caused by sulfation due to charging voltages being lower than the specified optimum...
- An issue has been identified on a small percentage of the affected vehicles where the Engine Management...
- Customers may experience disengagement of the speed hold (cruise control) feature when travelling through...
What 2026 Ineos Grenadier owners say
Most recent owner complaints, unedited.
The vehicle is equipped with multiple safety monitoring systems. One of these systems is the lane departure correction. Unlike a gentle reminder as on most other vehicles, this vehicle applies on brake to force the vehicle in the opposite direction. This correction is violent. A new driver to this vehicle can try to compensate for this abrupt movement of the vehicle, overcompensating to a dangerous degree. The manufacturer is aware of this issue, along with numerous other safety systems issues. The vehicle constantly provides alerts for multiple systems, to the point many drivers simply turn all systems off. However the process to turn them off is tedious and must be repeated each time the car is started. As an alternative, many drivers just ignore all alerts. Ineos is reportedly coming out with an update, however this process should be monitored along with the sensitivity of these systems, and permitting the vehicle owner to have more control over which systems they choose to activate.
Incident Summary: I am reporting a recurring and dangerous failure of the vehicle’s lane-keeping/automated steering system. The vehicle provides unprompted, forceful steering inputs that fight the driver’s control, creating an immediate risk of high-speed collisions. Incident 1 (I-5 North): Traveling at 70 mph in the right-hand lane. Every few minutes, the vehicle initiated an unprompted steer to the left. I had to physically fight the steering wheel to maintain center and avoid a crash. The behavior only ceased when I moved to the left-hand lane. Incident 2 (I-80 East, Reno/Mogul, NV): Traveling at 65 mph in the left-hand lane. The vehicle initiated a sudden, forceful steer to the right, nearly causing a side-swipe collision with an adjacent vehicle. I had to use significant physical force to override the system and prevent an accident. Systemic Failure & Safety Concern: There is currently no way to permanently disable this system in the vehicle settings. Because the system defaults to "ON" upon every ignition cycle, I am forced to drive a vehicle that unpredictably attempts to steer into other lanes or off the road. The inability to permanently opt out of this malfunctioning "safety" feature is a grave concern, as the system itself has become the primary collision hazard.
Compare the 2026 Ineos Grenadier
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Questions about the 2026 Ineos Grenadier
Is the 2026 Ineos Grenadier reliable?
Owners have filed 3 complaints about the 2026 Ineos Grenadier, close to a typical Grenadier model year.
What is the most common problem with the 2026 Ineos Grenadier?
Driver assistance and stability, with 2 complaints.
How many recalls does the 2026 Ineos Grenadier have?
No recalls on record.
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