Yes, particularly if the car hits them at high speeds. Nearly all of them are safe at about 10 mph, though.
Normally local government and highway institutions (local authorities) limit their liability by putting up signs to warn motorists about speed bumps (or dips, which are common at California junctions and just as damaging). So those official bodies would say -- yes,they can damage those parts of your car, but only if you're not paying attention and hit them at speed. Solution is simple, S L O W down. Also, look around for hazards; normally the bumps are there because of a local hazard, such as a high density of children playing on nearby sidewalks (pavement).
They can even damage your body, especially if hit them at speed and your car's shocks aren't very good. They can cause spinal injuries or aggravate pre-existing back problems (Read more).
The most damaging bumps tend to not be on roads but in private parking lots (car parks). These may be too steep or designed such that it's hard not to scrape your undercarriage on them, no matter how slow you go.
Also, emergency service vehicles -- ambulances, fire engines, police cars, can't help but hit speed bumps fast sometimes, so they get the worst damage, typically.
Normally local government and highway institutions (local authorities) limit their liability by putting up signs to warn motorists about speed bumps (or dips, which are common at California junctions and just as damaging). So those official bodies would say -- yes,they can damage those parts of your car, but only if you're not paying attention and hit them at speed. Solution is simple, S L O W down. Also, look around for hazards; normally the bumps are there because of a local hazard, such as a high density of children playing on nearby sidewalks (pavement).
They can even damage your body, especially if hit them at speed and your car's shocks aren't very good. They can cause spinal injuries or aggravate pre-existing back problems (Read more).
The most damaging bumps tend to not be on roads but in private parking lots (car parks). These may be too steep or designed such that it's hard not to scrape your undercarriage on them, no matter how slow you go.
Also, emergency service vehicles -- ambulances, fire engines, police cars, can't help but hit speed bumps fast sometimes, so they get the worst damage, typically.