What is the Rear Subframe and Sill Corrosion problem on a 2003 Toyota MR2 Roadster (Mk3, W30)?

Common Problems with the
2003–2007 Toyota MR2 Roadster (Mk3, W30)

We've identified 1 known issue that can affect the 2003–2007 Toyota MR2 Roadster (Mk3, W30). None are considered critical, but they're worth knowing about before you buy.

Known Issues

Serious

Moderate

Minor

The 2003–2007 period has 1 fewer issue than the Toyota MR2 Roadster (Mk3, W30) average across all year periods.

All Known Issues

Rear Subframe and Sill Corrosion

ModerateBodywork & Rust

UK cars can rust around the rear subframe, chassis legs and sill areas, especially if they have never been properly protected underneath.

Estimated cost: £300–£1,800Affects: 1999–2007

Typical symptoms

•Rust scaling underneath
•Corrosion advisories on MOT history
•Fresh underseal hiding flaky metal

What to inspect before you buy

✓Inspect the rear subframe and lower chassis sections on a ramp
✓Check the sill seams and drain points

Buying Tips for the 2003 Toyota MR2 Roadster (Mk3, W30)

✓Early cars need proof of careful oil-level monitoring and ideally evidence that the original pre-cats are no longer a risk.
✓Check the rear subframe, rear chassis legs and sill areas because these cars are now old enough to hide structural corrosion.
✓Inspect the hood, drains and cabin for leaks; a damp MR2 quickly becomes a tatty one.

1999–2002 Toyota MR2 Roadster (Mk3, W30)