Buyer's guide
Original W133 sedans should be evaluated for rust perforation, engine condition, and matching numbers verification before purchase. Budget for period-correct restoration parts and specialized service from pre-war Mercedes specialists.
Common issues
| Issue | Severity | Notes |
|---|---|---|
| Rust perforation in floor pans and sills | High | Common in older examples exposed to weather |
| Worn valve guides causing oil consumption | Medium | Side-valve engine design increases wear |
| Deteriorated wiring and electrical components | Medium | Original cloth insulation degrades after 80+ years |