MG MG3 Valuation: 1,273 used car listings analysed

Market overviewPrices and data for March-2026: There are currently 1,273 used MG MG3 (model years 2015 - 2025) available. Prices range from £4,495 to £17,995, with a median price of £14,498. The most common configuration on the market is a combination of hatchback, petrol, and manual, while the most popular trims include Trophy, Exclusive, SE. Market dynamics indicate that a vehicle sells in an average of 25 days, and 44.6% of listings have recently seen a price reduction (with discounts up to £3,401). Additionally, 44 vehicles are currently listed below market value. An indicator of durability: the inventory includes models with a mileage of up to 62,000 km (Source: 42 scanned sites).

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Showing 1 - 25 of 1,253 results

How much does the MG MG3 depreciate?

Used MG MG3

A used MG MG3 (2025) model loses about £187 per month in value.


Factors that affect the depreciation of a MG MG3:
- Mileage driven
- Maintenance
- Service history


Depreciation is an important part of calculating the total cost of owning a MG MG3. In addition to the monthly depreciation of £187, 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 MG MG3 cost? Prices, ratings and depreciation by model year

How much does a used MG MG3 cost? Prices, ratings and depreciation by model year

Model year

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

2026 MG MG3

£14,498 - £21,790£17,2900 miles-£68021

2025 MG MG3

£14,245 - £18,440£15,6093,900 miles-£2,240607

2024 MG MG3

£8,250 - £18,495£13,2409,700 miles-£4,680181

2023 MG MG3

£9,000 - £15,295£10,90918,200 miles-£1,660131

2022 MG MG3

£7,995 - £13,480£10,08528,000 miles-£1,120122

2021 MG MG3

£6,595 - £12,495£9,17329,300 miles-£2,02030

2020 MG MG3

£7,200 - £10,695£8,56932,500 miles-£1,46034

2019 MG MG3

£5,490 - £8,998£7,45542,900 miles-£1,20054

2018 MG MG3

£3,995 - £7,999£6,16442,600 miles-£76016

2017 MG MG3

£2,991 - £5,981£4,22552,600 miles-£58021

2016 MG MG3

£3,250 - £4,795£4,10951,900 miles-£4020

2015 MG MG3

£1,950 - £4,395£3,33965,000 miles-£52025

2014 MG MG3

£1,700 - £4,595£3,31169,000 miles-£48011

*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: 24 March 2026

Comparison of MG MG3 variants and prices

Below you can compare prices and depreciation for the 4 most popular MG MG3 variants. The table is updated daily with data from the market in United Kingdom.

Comparison of MG MG3 variants and prices

Variant

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

🏆 The most popular

MG MG3 Trophy

£13,995 - £18,495£15,7745,300 miles-£3,300529

MG MG3 SE

£13,480 - £18,595£15,0300 miles-£2,200197
📈 The best value

MG MG3 Exclusive

£6,990 - £11,095£9,30022,600 miles-£500261
💰 The budget choice

MG MG3 Excite

£6,290 - £10,450£8,37827,100 miles-£1,26092

*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: 24 March 2026

Which variant should you choose?

💰 The budget choice

The Excite is the cheapest entry point with an average price of £8,378.

🏆 The most popular

There are the most Trophy for sale right now (529), which gives you the most options to choose from.

📈 The best value

The Exclusive has held its price stable with minimal loss in value over the past year (-£500).

MG MG3 (model year 2025) - Price development for the last 12 months and price projection for the next 6 months (March 2025 - August 2026)

Monthly price data with average prices and price ranges

Month

Average market price

Lowest market price

Highest market price

Calculation method

2025 - March
£18,100
£16,540£19,660
Estimate
2025 - April
£17,660
£16,460£18,840
Estimate
2025 - May
£17,720
£16,320£19,140
Estimate
2025 - June
£15,380
£14,440£16,320
Estimate
2025 - July
£16,220
£14,860£17,600
Estimate
2025 - August
£17,200
£15,400£19,000
Estimate
2025 - September
£17,700
£16,260£19,120
Estimate
2025 - October
£17,580
£16,660£18,500
Estimate
2025 - November
£17,120
£16,360£17,880
Estimate
2025 - December
£16,660
£15,900£17,400
Estimate
2026 - January
£16,240
£15,540£16,920
Estimate
2026 - February
£15,860
£15,100£16,600
Estimate
2026 - April
£15,120
--
Forecast
2026 - May
£14,740
--
Forecast
2026 - June
£14,380
--
Forecast
2026 - July
£14,020
--
Forecast
2026 - August
£13,640
--
Forecast

All estimates and forecasts are based on actual market data

Last updated: 24 March 2026

Average Monthly Depreciation

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

Past 12 months

-£2,240

Next 6 months

-£2,220

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Price checked by AutoUncle

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Looking for the popular MG MG3 used?

Are you interested in buying a used small car? Then the MG MG3 is a popular choice. AutoUncle presents an impressive 1,284 options in the UK compiled from various dealership websites and online marketplaces.

How much is a pre-owned MG MG3 worth?

The price of a used MG MG3 ranges from £4,999 for the cheapest model to £17,995 for the latest and most well-equipped model.

The used car price of an MG MG3 is determined by a number of factors, the most important of which are year of production, engine capacity and performance, fuel economy of the car, the car's mileage not to mention the trim level of the car.

For instance, a car that is newer and has fewer miles on the clock will typically command a higher price. In the same vein, models at the higher end, replete with luxurious features or more robust engines, generally come with a more substantial price tag than a car from an older model year, with higher mileage and no optional extras.

Which trim levels can I choose for the MG MG3?

When assessing the price of a used MG MG3, it's essential to analyze vehicles having the same engines and equipment. If you don't, you might draw an inaccurate conclusion about which car to buy.

Which fuel variants are most in demand for the MG MG3?

The most popular fuel type for the MG MG3 is petrol.

Types of fuel:

  • MG MG3 petrol: 710 cars currently available with an average price of £10,651
  • MG MG3 hybrid: 484 cars currently available with an average price of £15,870
  • MG MG3 plug-in hybrid: Currently there is 90 cars available on AutoUncle with an average price of £16,752

Your driving behavior is an important aspect to consider when selecting a fuel type. Do you generally drive in city conditions or on open highways and motorways? What is your average weekly mileage count?

If you mostly drive short trips, electric cars, plug-in hybrids or petrol cars may be relevant. For longer daily commutes, a modern electric car is often suitable - especially if you can charge at home or at work. Despite the rise of electric cars, diesel can still be useful for long journeys and lack of charging options. Note that there are countries where diesel engines with heavy emissions are forbidden from entering city areas.

In which body types are the MG MG3 available?

On AutoUncle, the MG MG3 is exclusively offered in the hatchback body style. Hatchbacks are quite compact and offer a great driving experience as well as ample space. Their fuel efficiency makes them popular with people living in cities, and another key selling point is that they’re easy to park.

Which cars are in the same class as the MG MG3?

The MG MG3 is quite well-liked in its segment but still it has some competitors.

Most popular alternatives to the MG MG3

  • Ford Fiesta
  • VW Polo
  • Mini Cooper

The Ford Fiesta is a great alternative to the MG MG3. With an average sales price of £6,500 you'll currently discover a substantial selection of 6,435 of these cars available for purchase on AutoUncle.

The VW Polo is another popular choice in this segment, with 5,519 cars for sale and an average price of £14,749. The Mini Cooper is the third best alternative. There are currently 4,606 of this car for sale in the UK with an average sales price of £16,150.

Considering a more eco-friendly alternative to the MG MG3?

Considering something greener than the MG MG3? Check out these electric alternatives from the same segment::

Still struggling to find an electric car that fits your taste? Explore our entire assortment of electric cars here.

All regions for MG MG3

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