# Westfield Sei UK sold prices and market trends

Updated 19 Oct 2026. Source: Autotrender, https://autotrender.co.uk/make/westfield/model/sei

## Summary

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.

## Monthly statistics

Prices are GBP medians. "Sold" is the number of Westfield Sei adverts removed from Autotrader that month.

| Month | Median asking price | Median sold price | Sold | Median 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 | 3 | 5 |
| October 2026 (so far) | £15,000 | — | 2 | — | 0 | 3 |

## Questions and answers

### What is the average used Westfield Sei price in the UK?

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.

### Are used Westfield Sei prices going up or down?

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.

### How long does a used Westfield Sei take to sell?

The median used Westfield Sei sells within 22 days of being listed on Autotrader, based on 10 recorded sales.

### How many used Westfield Sei cars are for sale in the UK?

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.

### How does Autotrender work out Westfield Sei sold prices?

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.

## About this data

Autotrender (https://autotrender.co.uk) tracks used car listings on Autotrader UK and publishes sold prices, price history and supply trends by make and model. Figures on this page are recomputed after every scan. Licence: CC BY-NC 4.0; please cite Autotrender and link to https://autotrender.co.uk/make/westfield/model/sei.