Best Mercedes-Benz 420SEL Year to Buy
There is no single best Mercedes-Benz 420SEL year: the right one depends on your budget and what you want from the car. Across 106 verified sales, the 1989 is the most affordable at $12,456. The 1987 trades most often (23 verified sales) and has held its value best, now worth 43% of its original MSRP.
Data: DriveIndex. 6 model years with at least 10 verified sales each, latest sale Nov 5, 2026. Methodology
Mercedes-Benz 420SEL Value by Model Year
| Year | Value | Vs. original MSRP | Verified sales | For sale |
|---|---|---|---|---|
| 1991 420SEL | $15,188No comparable sale since Jan 2025 | 23% | 17 | 1 |
| 1990 420SEL | $14,742 | 23% | 20 | — |
| 1989 420SEL | $12,456 | 20% | 14 | 2 |
| 1988 420SEL | $18,016No sale since Dec 2025 | 31% | 12 | — |
| 1987 420SEL | $22,778 | 43% | 23 | 3 |
| 1986 420SEL | $12,609 | 25% | 20 | 3 |
Value is DriveIndex's market value for each year, from verified sales. “Vs. original MSRP” compares it with the sticker price when new, not adjusted for inflation: 100% means it is worth exactly what it cost. Years with fewer than 10 verified sales are listed but not ranked.
Which 420SEL year is appreciating?
The table shows what each year is worth. Pro adds the direction: the live Value Signal for every year, how confident it is, a 1–5 year projection, and every sold price behind it. Collector adds the best months to buy and an estimated market-bottom date.
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Best Mercedes-Benz 420SEL Year: Frequently Asked Questions
What is the best Mercedes-Benz 420SEL year to buy?
There is no single best Mercedes-Benz 420SEL year: the right one depends on your budget and what you want from the car. Across 106 verified sales, the 1989 is the most affordable at $12,456. The 1987 trades most often (23 verified sales) and has held its value best, now worth 43% of its original MSRP. The table on this page lists every model year with its market value, its value against its original MSRP and how many have sold.
Which Mercedes-Benz 420SEL year is the cheapest?
The 1989 Mercedes-Benz 420SEL is the most affordable year with enough verified sales to compare, currently valued at $12,456. The most valuable is the 1987, at $22,778.
Which Mercedes-Benz 420SEL year holds its value best?
The 1987 Mercedes-Benz 420SEL is now worth 43% of its original MSRP of $53,500, the best of the years with enough verified sales to compare. That compares today's value with the sticker price when new, not adjusted for inflation.
How much is a Mercedes-Benz 420SEL worth?
Depending on the model year, a Mercedes-Benz 420SEL is worth from $12,456 to $22,778 today, based on verified sales. Mileage, condition and options move any single car's price; each year's page shows its recent sales.
Which Mercedes-Benz 420SEL year is appreciating?
This page shows what each year is worth and how that compares with its original price. Whether each year is appreciating, stable or depreciating is DriveIndex's Value Signal, which Pro members see for every year along with a 1–5 year projection.