Heavy under charge – Why Electric Vehicles Push Suspension Systems to the Limit

A clear pattern is emerging in workshops: the suspension on electric vehicles sometimes wears out faster than expected, even with low mileage. The shock absorbers lose precision, the bearings develop play, and the suspension tuning feels less stable overall.

The problem is that traditional experience-based knowledge from the internal combustion engine sector is only of limited use here. The suspension of electric cars is subject to different physical conditions that directly affect diagnosis, wear patterns, and repairs.

Increased Weight in the Chassis of Electric Vehicles: Continuous Load Instead of Peak Load

A key difference is vehicle weight. Depending on the model, the battery installed in the underbody adds several hundred kilograms of additional load to the system—and this load is constant.
In the chassis of electric vehicles, this means a constant base load on all relevant components. The shock absorbers operate in a higher load range, the springs are more preloaded, and components such as strut bearings or control arm bearings age faster.
Wear is thus no longer caused solely by mileage or driving profile, but increasingly by pure continuous load over time.

Weight distribution in the electric vehicle chassis: new load ratios on both axles

In addition to the sheer weight, the overall weight distribution also changes. While the low center of gravity of the battery ensures stability, it significantly shifts the load ratios in the electric vehicle’s chassis.
As a result, the front and rear axles react differently to acceleration, cornering, and load changes. Even small deviations in tuning can have a direct impact on comfort, noise levels, and durability.
For the repair shop, this means: The suspension components must fit the respective vehicle model much more precisely than before.

Instant Torque in Electric Vehicles: High Forces from the Very First Moment

Another key factor is the torque that is immediately available. Unlike vehicles with internal combustion engines, electric vehicles deliver full power the moment they start moving—without any build-up in RPM and without delay.
However, this direct power transmission generates high peak loads throughout the entire suspension system. The suspension, bearings, and damping are particularly affected—especially in heavy vehicles such as SUVs or high-performance all-wheel-drive models.

Regenerative braking and chassis loading: Underestimated dynamics in everyday driving

Regenerative braking also significantly alters the load profile. Deceleration no longer occurs exclusively via the mechanical braking system, but via the electric motor itself.
In the suspension of electric vehicles, this leads to altered and sometimes unfamiliar load-change behavior. The forces do not always act linearly, but rather with varying intensities on bearings, dampers, and axle guides.
These effects are barely noticeable while driving, but they have a lasting impact on the components.

Electric vehicle chassis in the workshop: Diagnostics are becoming more complex

For the workshop, this results in a key change: Diagnostics on electric vehicle chassis are becoming significantly more complex.
Wear patterns can no longer be clearly attributed to individual components, as multiple systems interact. Problems often do not arise in isolation, but rather through the interaction of the suspension, drivetrain, and regenerative braking behavior.
This requires a systemic understanding rather than a purely component-by-component analysis.

Repair Solutions for Electric Vehicle Chassis: Why OE-Grade Quality Is Critical

The chassis of electric vehicles is subjected to higher forces over the long term than those of vehicles with conventional powertrains. Shock absorbers, bearings, and suspension components are exposed to a more constant additional load throughout their entire service life.
Under these conditions, a solution that is merely “suitable” is often no longer sufficient. Precise adaptation to the vehicle and load profile is crucial. Even small deviations in material properties or damping behavior can directly affect comfort, safety, and wear.
VEMO focuses here on OE-oriented quality with high fit accuracy and a technical design specifically tailored to the requirements of modern vehicles. This includes higher continuous loads due to the weight of the battery as well as dynamic load changes caused by instantly available torque and regenerative braking.
For the workshop, this means consistent repair results, reproducible quality, and a reliable restoration of the suspension to its original condition without compromising system performance.
VEMO air springs are available from our partners and directly in the VIEROL Shop. Discover the complete VEMO air spring range here. and the VEMO catalog for air spring systems.

💡 What You Must Keep in Mind When Performing Chassis Service on Electric Vehicles

When performing chassis service on electric vehicles, mechanics alone are not enough—safety, an understanding of the system, and precision are just as important as the part replacement itself.

High-voltage safety is the top priority. Before working on the chassis, always:
🔧 Disconnect the vehicle from the power supply
🔧 Perform high-voltage clearance (especially when working near the battery tunnel or on air suspension systems)
🔧 Only trained personnel (e.g., Level 2S) may work on high-voltage-sensitive areas. Without training, there is a risk of life-threatening danger and legal liability!
Wheel alignment is mandatory after every service
🔧 After replacing springs, dampers, or bearings, precise wheel alignment with calibration is required
🔧 Especially for vehicles with lane-keeping or steering assist: Without proper calibration, there is a risk of malfunctions, false warnings, and imprecise handling

Don’t forget sensors & suspension control
Many electric vehicles have electronic level sensors and damper control (often linked to regenerative braking management)
After replacement: Check sensors for proper function and calibrate if necessary! Consequences of errors:
🔧 Height deviations (especially with air suspension)
🔧 Error messages in the instrument cluster
🔧 Unstable or unbalanced handling

Proper Installation: Torque Values, Sequence, Quality
🔧 Follow the manufacturer’s torque specifications
🔧 Perform installation in the specified order

Common issues caused by improper tightening:
🔧 Squeaking noises
🔧 Material stress
🔧 Component failure or premature wear

Always replace parts by the axle – don’t do things halfway
Always replace safety-critical parts such as springs, shock absorbers, or control arms in pairs on a single axle. This helps you avoid:
🔧 Uneven suspension compression
🔧 Misalignment
🔧 Stressed bearings, uneven tire wear

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