Volvo offers a One-Pedal Drive (OPD) where the car can be driven exclusively with the accelerator on its C40 electric cars. Foot off is braking and foot on is accelerating. While using this mode I experienced an uncommanded acceleration of the vehicle. I was creeping forward, applying slight pressure on the accelerator, when the car lurched forward suddenly and was close to impacting a stopped car in front of me. The amount the car accelerated did not match the amount of pressure I exerted on the accelerator pedal. After the car in front of me moved up, I again began to creep and again the car began to lurch forward suddenly in a manner that did not match the amount of pressure I exerted on the pedal. After this I turned off OPD and made a report to Volvo regarding the uncommanded acceleration incident. Road conditions were dry, weather was clear and about 85-90F, there was one car in front of me, and I almost exclusively used OPD before this incident so I was familiar with the pressures required to accelerate

Source: NHTSA complaint ODI #11764597 · view all complaints for this vehicle at nhtsa.gov

Car was parked at my house. After a heavy heavy rain, I saw 1/2" standing water on the passenger side floorboards. The cowl drainage had been blocked, and I was told water had found it's way into the cabin. It's an EV, so this is a serious issue. My climate control was inoperative, the tire pressure sensors also affected. And not sure what other systems may have been damaged. This had never happened before, and my repair estimate is $5,000.00. It is unfathomable that a car of this level (and price) could have a design that would allow this situation. Thank you for your attention.

Source: NHTSA complaint ODI #11719211 · view all complaints for this vehicle at nhtsa.gov

I purchased a used 2023 Volvo C40 that was represented as Certified Pre-Owned. Shortly after purchase, the vehicle developed persistent grinding noises during braking, vibration, and mechanical noises that occur even after normal driving. The vehicle has been returned to the selling Volvo dealer multiple times for diagnosis and repair. Dealer service records state that brake rust was “cleaned” and that the issue was resolved; however, the grinding noise persisted immediately upon pickup. Multiple dealership employees acknowledged hearing the noise. The dealer drove the vehicle over 140 miles attempting to replicate the issue, but no permanent repair was made. I later observed significant corrosion and deterioration on brake and suspension-related components. In addition, the vehicle produces a loud thumping noise from the air conditioning system, which was documented via video and heard by dealership management, but the dealer stated they could not replicate the issue. Despite repeated service visits, the braking noise and mechanical concerns remain unresolved. I am concerned these conditions may affect braking performance, vehicle stability, and overall vehicle safety.

Source: NHTSA complaint ODI #11712259 · view all complaints for this vehicle at nhtsa.gov

I was at a traffic light today and my rear passenger window just completely spider webbed, while my daughter was in the back seat. I had to pull over and clean as much glass from the window to prevent falling on her and causing any additional damage. There were no other vehicles or pedestrians around. The only thing I can think of is that it was temperature related from being in the sun for a few hours and then having the AC on for about 5 minutes. I have researched on different volvo forums and threads and see other owners having similar issues. [XXX] [XXX] Thermal stress and expansion: When exposed to high temperatures, the glass expands, and if this expansion is uneven (perhaps due to varying thicknesses or materials), it creates thermal stress, potentially weakening the glass. When I reported the incident to the dealership they denied any other complaints or recalls instantly put the blame on an external impact without even inspecting the vehicle. There has been no official inspection by any party. The soonest the dealer will see it is on 8/12/25 INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Source: NHTSA complaint ODI #11679601 · view all complaints for this vehicle at nhtsa.gov

Persistent steering wheel vibration at highway speeds (60-80 mph), present from the first drive within two hours of taking delivery of this Certified Pre-Owned vehicle on April 14, 2026 at 21,075 miles. No warning lamps or messages. The vibration is constant at highway speed, not intermittent, causing driver fatigue and distraction during sustained highway driving. This is a known defect documented in Volvo Technical Journal TJ 36752.3.0, classified under function group 4661 (drive shaft). Kline Volvo of Maplewood, MN confirmed the vibration and performed the TJ-prescribed repairs: tire balancing, tire replacement, and driver's airbag module replacement containing an oscillation damper. Volvo's own TJ notes this repair only "lessens" the vibration. The vibration improved but in my assessment has not been fully resolved. A second Volvo dealer's service manager independently acknowledged the issue and consulted Volvo's regional service representative, who confirmed no further fix is currently available beyond the TJ repair. I have escalated to Volvo executive leadership in writing and am awaiting response. The vehicle is available for inspection.

Source: NHTSA complaint ODI #11737627 · view all complaints for this vehicle at nhtsa.gov