BMW 123 Valuation: 74 used car listings analysed

autouncle-certified

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

Showing 1 - 25 of 77 results

How much does the BMW 123 depreciate?

Used BMW 123

A used BMW 123 (2025) model loses about £483 per month in value.


Factors that affect the depreciation of a BMW 123:
- Mileage driven
- Maintenance
- Service history


Depreciation is an important part of calculating the total cost of owning a BMW 123. In addition to the monthly depreciation of £483, you should also factor in fuel costs, road tax, insurance and maintenance (including tyres and car washes) to get the full monthly cost.

How much does a used BMW 123 cost? Prices, ratings and depreciation by model year

How much does a used BMW 123 cost? Prices, ratings and depreciation by model year

Model year

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

2026 BMW 123

£35,258 - £39,650£37,0270 miles+£260< 10

2025 BMW 123

£29,104 - £34,811£32,0126,700 miles-£5,80068

*The 'Price range' column shows the prices at the 5th and 95th percentiles of cars in the current market

The data is based on the cars currently listed on AutoUncle

Last updated: 3 April 2026

Comparison of BMW 123 variants and prices

Below you can compare prices and depreciation for the 1 most popular BMW 123 variants. The table is updated daily with data from the market in United Kingdom.

Comparison of BMW 123 variants and prices

Variant

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

💰 The budget choice

BMW 123 M Sport

£28,995 - £36,333£31,9396,500 miles+£7,98074

*The 'Price range' column shows the prices at the 5th and 95th percentiles of cars in the current market

The data is based on the cars currently listed on AutoUncle

Last updated: 3 April 2026

Which variant should you choose?

💰 The budget choice

The M Sport is the cheapest entry point with an average price of £31,939.

🏆 The most popular

There are the most M Sport for sale right now (74), which gives you the most options to choose from.

📈 The best value

The M Sport has held its price stable with minimal loss in value over the past year (+£7,980).

BMW 123 (model year 2025) - Price development for the last 12 months and price projection for the next 6 months (April 2025 - September 2026)

Monthly price data with average prices and price ranges

Month

Average market price

Lowest market price

Highest market price

Calculation method

2025 - April
£37,920
£36,720£39,140
Estimate
2025 - May
£37,360
£35,500£39,200
Estimate
2025 - June
£34,340
£32,640£36,040
Estimate
2025 - July
£33,540
£32,020£35,060
Estimate
2025 - August
£32,420
£30,780£34,040
Estimate
2025 - September
£31,840
£30,520£33,160
Estimate
2025 - October
£31,740
£30,600£32,900
Estimate
2025 - November
£31,240
£30,240£32,260
Estimate
2025 - December
£31,260
£30,020£32,480
Estimate
2026 - January
£31,780
£30,520£33,040
Estimate
2026 - February
£32,100
£30,900£33,320
Estimate
2026 - March
£32,120
£31,000£33,240
Estimate
2026 - May
£32,280
--
Forecast
2026 - June
£32,360
--
Forecast
2026 - July
£32,420
--
Forecast
2026 - August
£32,500
--
Forecast
2026 - September
£32,580
--
Forecast

All estimates and forecasts are based on actual market data

Last updated: 3 April 2026

Average Monthly Depreciation

A summary of the past 12 and an estimation of the next 6 months.

Past 12 months

-£5,800

Next 6 months

£460

autouncle-certified

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

Interested in finding a great deal on a used BMW 123?

Are you considering getting a used sports car? Then the BMW 123 is an excellent choice. AutoUncle present 77 options sourced from various dealership websites and online marketplaces.

How much does a used BMW 123 go for?

A used BMW 123 costs between £28,990 for the cheapest variant and £35,000 for the most expensive model.

The used car price for a BMW 123 is dictated by five primary factors: the year of the car, engine capacity and performance, the car's fuel efficiency, mileage and the level of equipment in the car.

As an example, a newer model with fewer miles covered, or a high-end version boasting a potent engine, often fetches a top-tier price than a car from an older model year, with higher mileage and no optional extras.

How many equipment variants are there for the BMW 123?

The BMW 123 is only available in one trim level, the BMW 123 M Sport.

As you considers the cost of a used BMW 123, it's fundamental to evaluate vehicles with equivalent engines and accessories. If you don't, you might draw an inaccurate conclusion about which car to acquire.

What are the most popular fuel types for the BMW 123?

For the BMW 123, petrol is the most favored fuel.

BMW 123 fuel types compared:

We urge you to take your driving habits into account before settling on a specific fuel type. How far do you usually drive in a standard week? Are your trips more often short ones, or do you tend to travel over long distances?

For short journeys, electric cars, plug-in hybrids or petrol cars are obvious choices. For longer daily commutes, a modern electric car is often suitable - especially if you can charge at home or at work. Diesel cars may still be relevant in some cases with very long journeys and lack of charging options. It's important to consider that in some countries, diesel engines with high emissions are prohibited from entering cities.

What body types do the BMW 123 have?

On AutoUncle, the BMW 123 is exclusively offered in the hatchback body style. Hatchbacks are versatile compact cars that meld superb driving dynamics with a surprisingly spacious interior. Their popularity soars among city dwellers, given their fuel efficiency and ease of parking.

What other cars should I consider?

The BMW 123 faces stiff competition within its segment.

Preferred alternatives to the BMW 123

  • BMW 420
  • Audi TT
  • Mazda MX5

The BMW 420 is a great alternative to the BMW 123. With an average sales price of £18,198 you'll currently discover a substantial selection of 1,491 of these cars available for purchase on AutoUncle.

The Audi TT is another popular car in the segment with a selection of 949 vehicles currently for sale with an average price of £13,199. Ranked third, the Mazda MX5 is also a good alternative to the BMW 123, and you'll find 556 used Mazda MX5 cars for an average price of £15,000 on AutoUncle.

Considering an electric car?

Considering something greener than the BMW 123? Check out these electric alternatives from the same segment::

Didn't find an electric car to your liking? Check out our extensive selection of electric cars here.

All fuel types for BMW 123