Mercedes C300 Valuation: 315 used car listings analysed

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How much does the Mercedes C300 depreciate?

Used Mercedes C300

A used Mercedes C300 (2019) model loses about £118 per month in value.


Factors that affect the depreciation of a Mercedes C300:
- Mileage driven
- Maintenance
- Service history


Depreciation is an important part of calculating the total cost of owning a Mercedes C300. In addition to the monthly depreciation of £118, 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 Mercedes C300 cost? Prices, ratings and depreciation by model year

How much does a used Mercedes C300 cost? Prices, ratings and depreciation by model year

Model year

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

2025 Mercedes C300

£31,375 - £54,410£41,1676,800 miles-£9,44020

2024 Mercedes C300

£29,298 - £38,141£33,61020,900 miles-£12,26013

2023 Mercedes C300

£25,250 - £35,789£30,02121,000 miles-£3,40023

2022 Mercedes C300

£22,395 - £31,990£27,46631,100 miles-£4,44011

2021 Mercedes C300

£13,450 - £23,995£19,52954,100 miles-£5,40017

2020 Mercedes C300

£13,500 - £21,950£18,39857,300 miles-£2,14038

2019 Mercedes C300

£12,995 - £21,290£17,82853,500 miles-£1,420105

2018 Mercedes C300

£14,113 - £20,999£17,38860,100 miles-£1,78038

2016 Mercedes C300

£10,475 - £19,500£13,99063,900 miles-£36020

2017 Mercedes C300

£9,500 - £17,995£13,95376,400 miles-£1,96014

2014 Mercedes C300

£11,475 - £11,990£11,81899,500 miles-< 10

2015 Mercedes C300

£8,995 - £13,595£11,33689,700 miles-£2,06013

*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: 11 April 2026

Comparison of Mercedes C300 variants and prices

Below you can compare prices and depreciation for the 6 most popular Mercedes C300 variants. The table is updated daily with data from the market in United Kingdom.

Comparison of Mercedes C300 variants and prices

Variant

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

Mercedes C300 AMG Line Premium Plus

£10,989 - £53,220£25,05346,300 miles-£6,70062

Mercedes C300 AMG Line Premium

£12,500 - £36,500£21,19549,500 miles-£4,620113
🏆 The most popular

Mercedes C300 AMG line

£12,000 - £29,349£18,76353,900 miles-£1,740117

Mercedes C300 Sport Edition

£13,450 - £16,200£14,87669,100 miles-< 10

Mercedes C300 Premium Plus

£9,995 - £19,000£14,28667,800 miles-< 10
💰 The budget choice

Mercedes C300 Premium

£9,500 - £16,998£13,55860,300 miles-< 10

*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: 11 April 2026

Which variant should you choose?

💰 The budget choice

The Premium is the cheapest entry point with an average price of £13,558.

Accuracy will improve as more cars from this variant become available

🏆 The most popular

There are the most AMG line for sale right now (117), which gives you the most options to choose from.

📈 The best value

The AMG line has held its price stable with minimal loss in value over the past year (-£1,740).

Mercedes C300 (model year 2019) - 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
£19,580
£17,980£21,160
Estimate
2025 - May
£19,620
£18,020£21,220
Estimate
2025 - June
£19,380
£17,940£20,820
Estimate
2025 - July
£19,260
£17,800£20,740
Estimate
2025 - August
£19,400
£17,960£20,840
Estimate
2025 - September
£19,440
£17,820£21,040
Estimate
2025 - October
£19,260
£17,620£20,900
Estimate
2025 - November
£19,180
£17,540£20,840
Estimate
2025 - December
£19,040
£17,420£20,640
Estimate
2026 - January
£18,840
£17,340£20,340
Estimate
2026 - February
£18,600
£17,140£20,060
Estimate
2026 - March
£18,160
£16,660£19,640
Estimate
2026 - May
£17,700
--
Forecast
2026 - June
£17,480
--
Forecast
2026 - July
£17,260
--
Forecast
2026 - August
£17,040
--
Forecast
2026 - September
£16,820
--
Forecast

All estimates and forecasts are based on actual market data

Last updated: 11 April 2026

Average Monthly Depreciation

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

Past 12 months

-£1,420

Next 6 months

-£1,340

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Price checked by AutoUncle

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Expensive

Should your next car be a used Mercedes C300?

Are you interested in getting a used large sized family car? Look no further than the Mercedes C300 - an excellent choice! There are 310 used Mercedes C300s currently available on AutoUncle, each one collected from an online marketplace or dealership website.

How much does a used Mercedes C300 cost?

Currently, the prices for a pre-owned Mercedes C300 start at £11,995 and go up to £36,990.

The cost of a pre-owned Mercedes C300 is determined by several factors. Key contributing elements include the year of the car, engine size and performance, fuel consumption of the car, mileage as well as the level of equipment in the car.

For instance, a more recent model with limited mileage, or a premium variant featuring a powerful engine, typically commands a higher price than, for example, an older car without special equipment and with many kilometres behind it.

How many equipment variants are there for the Mercedes C300?

When evaluating the costs of pre-owned Mercedes C300, it is essential only comparing the offers of cars with the same engine and equipment variant. Otherwise, you may end up reaching a wrong conclusion on which car to purchase.

What are the fuel options for the Mercedes C300?

The Mercedes C300 most commonly uses diesel as its fuel type.

Types of fuel:

We strongly advise considering your driving habits prior to choosing among the various fuel types. Are your driving routes predominantly in urban areas or on highways and motorways? What is your average weekly mileage?

For short trips, range is rarely a limitation, so electric, plug-in hybrid or petrol can be fine. For longer daily journeys, consider an electric car, especially if you have the option to charge at home or at work. 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 certain countries have banned high-emission diesel engines from cities.

Is the Mercedes C300 available in multiple body variants?

Stationcar is the preferred body type amongst drivers of the Mercedes C300. In the UK, estates, commonly referred to as station wagons, are in high demand due to their perfect blend of driving prowess and generous space. Active families often gravitate towards these, as well as SUVs and MPVs, for their versatility.

What is the cost of Mercedes C300 with different body types?

What other comparable cars are there to Mercedes C300?

The Mercedes C300 has various competing cars from the same segment.

Most popular alternatives to the Mercedes C300

  • MG ZS
  • BMW 320
  • Tesla Model 3

The best alternative to the Mercedes C300 is the MG ZS. There are 3,020 of this car for sale in the UK right now and the average selling price is £14,302.

The BMW 320 is another popular pick, with 2,407 cars currently for sale and an average price of £20,990. Another good choice for an alternative car is the Tesla Model 3 with 2,399 cars for sale for the average price of £17,790.

Pondering the adoption of an electric car?

If you're considering an electric car in the same category as the Mercedes C300, here are some alternatives you might consider:

Haven't discovered an electric car that suits your preferences? Examine our full lineup of electric cars here.

All body types for Mercedes C300

All regions for Mercedes C300

All fuel types for Mercedes C300