What are the changes after the EPS upgrade for the Verano?

[AugustLee]

After the EPS upgrade, the steering wheel of the Verano will become lighter. EPS, or Electric Power Steering, is a power steering system that directly relies on an electric motor to provide assistive torque. Compared to traditional hydraulic power steering systems, EPS systems offer many advantages. The EPS mainly consists of a torque sensor, vehicle speed sensor, electric motor, reduction mechanism, and electronic control unit. The Verano is a compact sedan under the Buick brand, with body dimensions of 4723 mm in length, 1802 mm in width, and 1466 mm in height, and a wheelbase of 2700 mm. The Verano is equipped with two engines: a 1.0-liter turbocharged engine and a 1.3-liter turbocharged engine. The 1.0-liter turbocharged engine delivers a maximum power of 92 kW and a maximum torque of 180 Nm, with the maximum power achieved at 5800 rpm and the maximum torque available between 1350 to 4500 rpm. The 1.3-liter turbocharged engine produces 165 horsepower and a maximum torque of 240 Nm, with the maximum power achieved at 5600 rpm and the maximum torque available between 1500 to 4000 rpm.

[MacIker]

I've personally experienced the EPS upgrade on the Verano, and the changes are indeed noticeable. The main improvement is in the steering feel optimization. When maneuvering at low speeds, the steering wheel is noticeably lighter—where I used to have to put in considerable effort to turn the wheel, now just two fingers can easily do the job. At high speeds, the power assist becomes more stable, preventing the steering from feeling too light, and the body responds much quicker during emergency lane changes. The system logic has also become smarter; you can feel the power assist automatically adjusting when navigating continuous curves, making entry and exit smoother. Additionally, I've heard that the upgraded electronic control system is more energy-efficient, reducing strain on the battery, though this will require long-term observation. Friends accustomed to the older model say it feels like driving a completely different car after test-driving, with steering precision and feel being the most obvious upgrades.

[SanJoanna]

The core of the Verano's EPS upgrade this time lies in software calibration optimization, with the entire power-assist curve being retuned. The power assist in low-speed ranges has been significantly increased, allowing even female drivers to operate it with one hand when parking. The damping sensation in medium to high-speed ranges has been enhanced, and the feeling of the steering wheel becoming loose at speeds above 80 km/h has basically disappeared. The refinement of steering feedback has improved, preventing the steering wheel from suddenly jerking when driving on bumpy roads. The system response delay has been reduced by approximately 30%, with the wheels' movement almost synchronizing with the steering input. Another hidden improvement is the reduced failure rate, with the occasional steering noise issues in the old model being completely resolved in the new program. It is recommended to perform a four-wheel alignment after the upgrade to maximize the precision of the new system.

[RiverRose]

As a long-time owner of the Verano, the most noticeable improvement after the EPS upgrade is the lighter steering feel. Previously, making sharp 90-degree turns in underground parking lots required significant effort, but now it's much easier. The steering wheel provides clearer road feedback, allowing me to sense subtle changes when tires roll over different surfaces without causing hand vibration. On highways, the increased steering weight noticeably enhances stability, reducing frequent corrections on windy days. Reversing feels more responsive, especially for parallel parking where I can now do it in one go. The entire system operates much quieter, with the motor's humming sound almost gone. The upgrade process took about half an hour at the dealership, just requiring a diagnostic tool to flash the program.

[ChaseLynn]

The upgrade of the Weilang EPS mainly focuses on three aspects: optimization of the power assist curve reduces steering effort by 40% at low speeds and minimizes steering wheel vibrations on washboard roads; improved response speed reduces steering lag to within 0.1 seconds, making the car more responsive during sharp turns; enhanced safety redundancy ensures the steering doesn’t lock up when sensors fail, thanks to backup programs. The most noticeable improvement in actual driving is in urban traffic, where frequent left and right turns feel as effortless as driving a toy car. In sport mode, the steering damping changes more linearly, allowing precise control of steering angles during hairpin turns. It is recommended to reset the steering learning values after the upgrade so the system can adapt to the new program faster. The upgrade cost for existing owners is relatively low, but the improvement in experience is definitely worth it.

[ZacharyLee]

I specifically tested the Verano EPS before and after the upgrade, and the changes are quite tangible. Firstly, the steering motor control strategy has been altered, with the maximum assist torque at low speeds increased by 15 Nm, making parking noticeably easier. Secondly, the speed-sensitive assist curve is steeper, with a clear demarcation at 40 km/h, enhancing the characteristic of light steering at low speeds and firm at high speeds. After upgrading the road vibration filtering algorithm, the steering wheel no longer jerks suddenly when going over speed bumps. The steering play has been reduced by about 30%, making the car's response to quick lane changes crisp and precise. The most surprising improvement is the energy optimization, with the power consumption when turning the wheel while stationary reduced by 20%. Overall, this is an upgrade that's invisible but palpable, with a more significant improvement in driving feel than changing tires.