
If you pre-order a new fender and bumper, the replacement can be completed in about two hours. If not pre-ordered and the fender and bumper require painting, it may take around three days. Normally, if you request a 4S store to install an original bumper, they are typically required to use genuine parts. However, driven by profit, there are cases where 4S staff exploit accident repairs for personal gain. Nowadays, 4S store information is becoming more transparent. If car owners are concerned that the bumper replaced by the 4S store is not genuine, they can check the bumper's logo or original label before replacement—genuine parts usually have specific markings. Alternatively, they can request relevant documentation from the 4S store.

The time it takes to replace a bumper and fender depends on the specific condition of the car and the repair shop's schedule. I just had my car's bumper repaired after a rear-end collision—it was completely removed and replaced with a new one. I dropped it off in the morning and picked it up in the afternoon, taking about 6 hours in total. The fender replacement is similar because removing the old part requires care to avoid damaging surrounding wiring, and installation involves alignment and angle adjustments. If the car is newer and parts are readily available, the job goes faster; older cars might need parts ordered, which could take a day or two. Painting also adds time—my recent paint job took half an hour, but drying took half a day. Scheduling to avoid crowds further extends the total time. I recommend visiting the shop first to clarify the quote and estimated duration, and ask if same-day pickup is possible. Some smaller repair shops, when short-staffed, might take up to a week—saves you a wasted trip. Call ahead to confirm all details so you’re fully informed and at ease.

As a friend who often tinkers with car repairs, I've helped others replace bumpers and fenders several times. Generally speaking, a professional technician can finish the job on an ordinary car in two to three hours if working quickly: First, inspect the damaged area and use a wrench to remove screws and take off the old part—this takes about 10 minutes. Then, align the new part with the screw holes and tighten without over-torquing, which takes about 20 minutes. Finally, test the fit and alignment of gaps, adjusting for about 15 minutes to complete the job. However, fenders are a bit more troublesome because they connect to the mudguard and car body, requiring about 30 minutes of precise alignment. Complicating factors include painting, parts shortages, or the need to calibrate sensors in high-end cars, which could add half a day to a full day. It's advisable to take clear photos of the vehicle before repairs so the shop owner can quickly identify the required parts, reducing inquiry time. For higher efficiency, choose weekdays for repairs when shops are less crowded than on weekends. After repairs, remember to test the lights to avoid misalignment and rework.

The time required to replace a bumper or fender is quite flexible, depending on the shop you choose and your own patience. A simple plastic bumper replacement can be done in under two hours at a regular shop; adding paintwork might take half a day at most. Metal fenders require a bit more effort—minor dents can be removed and reinstalled in half an hour, but if the body is deformed and requires welding and repainting, it might take a full day or more. DIY with your own tools can save time and money: installing a new part can be done in as little as an hour, but beginners might struggle with misalignment or incorrect holes, dragging it out to three hours, with the added risk of damaging electronic wiring. It’s often more convenient to leave it to professional shops, which have standardized time estimation systems. Call ahead to ask for details, such as whether it can be done the same day or if an appointment is needed. Remember, part quality affects long-term durability—don’t rush for cheap parts that may lead to more repair time down the road.


