My lancer has very bad rear end chassis rust where the rear subframe is fastened to the monobody. In this area all the suspension components and rear drivetrain are located. Damage occurs due to salt and other corrosive agents that are used for roads in Connecticut to melt snow. These agents rust the car where Mitsubishi failed to properly protect the steel under the rear end of the vehicle. It is widely observed that the 03-06 lancer has from factory a poor to almost no anti rust agent applied to the lower rear chassis area of the car where the subframe crossmember is located that holds suspension components and rear differential. Currently under nhtsa campaign 16V458000, there is a safety recall for the front subframe crossmember due to rust damage. As for the rear of the car there most certainly should be a safety campaign as the rust in this area develops quicker and can cause a catastrophic failure.

- Miramar, FL, USA

Rear frame rail rust. The car stated to accumulate rust on the frame rails of the car that connects the rear subframe and rear toe arm. Failure of these areas could lead to a crash. The manufacturer did a poor job corrosion proofing this area on this model year. The car had a 7 year/ 100,000 rust warranty in which I am sure this problem developed within that coverage but was hard to notice until rust started forming on the outside frame which is hard to see without jacking up the car.

- Crystal Lake, IL, USA

Rear chassis member (a frame rail) corroded close to the point where rear subframe is connected. It is now a safety concern to drive the vehicle as any significant impact may cause the rear suspension to detach. There was already a recall on rust of the front subframe however it seems that the problem is in inadequate undercarriage protection

- West Fargo, ND, USA

Rear frame rails rust close to points where the rear subframe is bolted on. Insufficient sealant/coating causes rust damage that can lead to structural weakness.

- West Fargo, ND, USA