MERCEDES C 300 E AMG LINE PREMIUM + A (2023)
Running costs, reliability data, and common problems from 39 real MOT tests.
Annual Cost
£1,777
£148/month
MOT Pass Rate
95%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 18-32
1999cc Hybrid
Great Choice
95% pass rate, £1777/year to run. 13 points above average.
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Annual Running Costs
~36 mpg
Flat rate (post-2017)
Low estimate due to excellent reliability
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Excellent reliability. Very few MOT failures. That's 13 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 3 years old, 95% of MERCEDES C 300 E AMG LINE PREMIUM + As from 2023 passed their MOT first time in 2026. That's based on 39 tests across the UK. The average mileage at this age is 17,446 miles.
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How Does It Compare?
Mileage Analysis
17,446
Average miles
22,200
Expected for age
The average 2023 MERCEDES C 300 E AMG LINE PREMIUM + A has 17,446 miles on the clock, which is below the expected 22,200 miles for a 3-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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About the 2023 MERCEDES C 300 E AMG LINE PREMIUM + A
The 2023 MERCEDES C 300 E AMG LINE PREMIUM + A is a family car with a 1999cc hybrid engine. 39 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. Among all cars from 2023, the average MOT pass rate is 95%, and this model falls short of that benchmark.
With an average of 17,446 miles at 3 years old, MERCEDES C 300 E AMG LINE PREMIUM + A owners tend to use this car less than the typical driver.
2023 MERCEDES C 300 E AMG LINE PREMIUM + A Fuel Costs
The 1999cc hybrid engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,327 per year at current hybrid prices of 142p per litre (based on 7,400 miles per year). As a hybrid, real-world fuel costs will vary significantly depending on how much electric-only driving you do.
What does it cost to own a 2023 MERCEDES C 300 E AMG LINE PREMIUM + A?
Total estimated annual running cost is £1,777 (£148/month), broken down as £1327 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 95% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2023 MERCEDES C 300 E AMG LINE PREMIUM + A
At 3 years old, this is still relatively fresh. You may find examples with remaining manufacturer warranty. Depreciation is slowing but hasn't bottomed out yet. Note: with only 39 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2023 MERCEDES C 300 E AMG LINE PREMIUM + A's fuel type, age, and engine size, these are the most likely problem areas to check.
Hybrid Battery Health
Low riskAfter 3 years, hybrid battery capacity may have reduced. A full replacement costs £2,000-£4,000, though reconditioning is cheaper at £500-£1,500.
Inverter and Power Electronics
Low riskThe inverter converts DC to AC for the electric motor. Failures are expensive (£1,500+) but relatively rare. Listen for unusual buzzing sounds.
Regenerative Braking
Low riskBrake discs can corrode from reduced use (the electric motor handles most braking). Surface rust is normal but deep pitting needs attention.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2023 MERCEDES C 300 E AMG LINE PREMIUM + A stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| MERCEDES C 300 E AMG LINE PREMIUM + A(2023) | 95% | £1327 | £195 | Grp 18-32 | £1777 |
| TOYOTA C-HR(2021) | 95% | £1327 | £190 | Grp 18-32 | £1772-£5 |
| HYUNDAI IONIQ(2021) | 91% | £1137 | £190 | Grp 12-25 | £1582-£195 |
| MINI COOPER S(2021) | 93% | £1137 | £190 | Grp 12-25 | £1582-£195 |
| KIA NIRO(2021) | 92% | £1137 | £190 | Grp 12-25 | £1582-£195 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
Related Mercedes Models
Explore other Mercedes cars or similar models in the same category.
MERCEDES A
2019 · 1461cc Diesel
MERCEDES C
2017 · 1991cc Hybrid
MERCEDES A-CLASS
2017 · 1461cc Diesel
TOYOTA C-HR
2021 · 1987cc Hybrid
HYUNDAI IONIQ
2021 · 1580cc Hybrid
MINI COOPER S
2021 · 1499cc Hybrid
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