A Mercedes-AMG E55 Wagon suffered a spectacular failure during a burnout, leaving its rear end badly damaged. Months later, the mechanics trying to bring it back to life found themselves using an unlikely workshop tool during the rebuild: an old air fryer.

What started as a routine burnout gone wrong turned into a full rear-end teardown, complete with a donor subframe, a limited-slip differential swap, rust repair, and one genuinely useful kitchen appliance doing a job it was never designed for.

The burnout destroyed far more than the brakes

The car was a W211-generation Mercedes-Benz E55 AMG Wagon with around 220,000 miles on the clock. It had been bought for £4,000 (roughly $5,000) and had spent much of its life in Scotland, leaving it with serious corrosion issues. The real disaster happened during a standing burnout at a car show, when the rear brake disc became extremely hot before suddenly shattering into numerous pieces. The failure was violent enough to resemble a pipe bomb going off inside the rear wheel arch.

The damage spread well beyond the brake disc. The rear wheel, brake caliper, subframe components, anti-roll bar mounting, arch liner, brake lines, axle and other surrounding parts were damaged. Brake fluid also reached the glowing brake disc, causing a brief fire. The car then sat for more than six months before repair work began. Rather than trying to save the damaged rear subframe, the mechanics decided that replacing the entire assembly made more sense.

The E55 gets a serious rear-end rebuild

A replacement rear subframe from another E55 AMG was sourced for the rebuild. It came with an open differential, but the mechanics chose to replace that unit with a Birds Limited Slip Differential. The original E55 ring gear was transferred onto the Birds LSD core, heated with a torch to expand it before being fitted onto the differential and secured with its bolts.

The rebuild was complicated by the car’s age and condition. Rust had affected parts of the chassis around the subframe mounting area, leaving a hole that needed to be stripped back and repaired. The area was welded, treated against corrosion, and protected with additional coatings. There were also several smaller problems along the way — a lower control arm bolt had rounded off and needed an extractor socket, while an assembly mistake meant some of the rear linkage had to be undone so the hubs could be pressed into their bearings before the axles were installed.

Then they put Mercedes bearings in an air fryer

The strangest part of the rebuild came when the mechanics needed to fit new tapered roller bearings onto the LSD casing. Instead of struggling to press the tight-fitting components on cold, they used an old air fryer to heat the bearing inner rings. The reason was straightforward: heating the metal allows it to expand slightly, making it easier to slip the bearing into position.

So while the headline says the mechanics “cooked” Mercedes AMG parts, they were not literally cooking car components like food. The air fryer was simply being used as a convenient heat source for a precision mechanical job. Once heated, the bearing rings could be fitted much more easily. The differential was then reassembled, with the end caps and shims set before the rear cover was installed, and the rebuilt LSD was fitted into the replacement subframe along with new rear air suspension units and Brembo handbrake cables.

The E55 finally shows signs of life

Getting everything back together was not completely straightforward. The replacement rear-right brake caliper turned out to be the wrong fit and lacked the correct mounting geometry, so it could not be installed properly during the initial test. The mechanics nevertheless reached a point where they could reconnect the battery and start the supercharged V8. With the car still on the lift, they put it into Drive and watched the rear wheels.

Both rear wheels began turning together. That was an important sign that the rebuilt Birds LSD was functioning. It did not mean the E55 was completely finished or ready for the road, but after a shattered brake disc, damaged suspension components, severe corrosion, and months sitting idle, the car was finally showing signs of life again. What started as a disastrous burnout had turned into a major rear-end rebuild involving a donor subframe, a rebuilt limited-slip differential, extensive rust repair, and, unexpectedly, an old air fryer.