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10 sales tracked since 12 Jun 2026 · 3 for sale now
Every Sei that's come off Autotrader since 12 Jun 2026, with its final asking price and how long it took to sell.
What each Sei variant sold for (filled dots) and what the 3 for sale are asking (rings), with monthly medians drawn through them. Click a dot to open the car.
Solid lines: median sold price per month (3+ sales). Dashed lines: median asking price of cars currently for sale, by the month they were listed.
By month sold, all variants
How long sold cars were listed
How many cars were listed each day since tracking began
Asking price range, with the median marked
Listings added and sold each month
3 live listings from Autotrader · from £10,250 · median £10,900
Sold and asking prices against mileage. Each dot is a car; click one to open it.
Month-by-month sold prices, asking prices, time to sell and supply for used Westfield Sei cars on Autotrader UK. Updated 19 Oct 2026.
As of 19 Oct 2026, there are 3 used Westfield Sei cars for sale on Autotrader UK, with a median asking price of £10,900. In the last 30 days, 2 Westfield Sei cars have sold. 2 new Westfield Sei listings appeared over the same period, so supply is steady.
In September 2026, the median sold price for a used Westfield Sei was £10,995 (5 sales). 5 cars sold in September 2026 compared with 0 in August 2026. The number for sale fell 28.6% to 5 by the end of September 2026.
Autotrender has recorded 10 Westfield Sei sales on Autotrader since 28 May 2026, with final asking prices from £9,995 to £15,950 and a median of £11,373. The typical Westfield Sei took 22 days to sell.
| Month | Median asking | Median sold | Sold | Days to sell | New listings | For sale at month end |
|---|---|---|---|---|---|---|
| June 2026 | £15,748 | – | 2 | – | 2 | 1 |
| July 2026 | £13,240 | – | 1 | – | 1 | 1 |
| August 2026 | £10,995 |
| – |
| 0 |
| – |
| 6 |
| 7 |
| September 2026 | £13,700 | £10,995 | 5 | 22 days | 3 | 529% |
|---|
| October 2026 so far | £15,000 | – | 2 | – | 0 | 3 |
|---|
The median asking price for a used Westfield Sei on Autotrader UK is £10,900, across 3 cars for sale as of 19 Oct 2026. Across all 10 recorded sales the median sold price is £11,373.
There have not yet been enough Westfield Sei sales in consecutive months to call a direction; Autotrender has recorded 10 sales so far and the trend will appear here as more come through.
The median used Westfield Sei sells within 22 days of being listed on Autotrader, based on 10 recorded sales.
There are 3 used Westfield Sei cars for sale on Autotrader UK as of 19 Oct 2026. Supply was down 28.6% in September 2026 compared with the end of August 2026 (7). In the last 30 days 2 were newly listed and 2 sold.
Autotrender records every Westfield listing on Autotrader UK twice a day (since 28 May 2026). A car counts as sold when its advert is removed, and its sold price is the final asking price before it came off; days to sell run from the advert's listing date to its removal. Medians are used throughout, and months with fewer than 5 sales are not used to call a trend.
Recomputed after every Autotrader scan. Plain-text version for citation: /make/westfield/model/sei/report.md · About Autotrender