MERCEDES EQC 400 SPORT 4MATIC (2021)
Running costs, reliability data, and common problems from 442 real MOT tests.
Annual Cost
£1,100
£92/month
MOT Pass Rate
86%
Good
Road Tax
£195
Flat rate/year
Insurance
Grp 1-8
0cc Electric
Solid Option
86% pass rate, £1100/year to run. Close to the national average.
Check a specific MERCEDES EQC 400 SPORT 4MATIC
Enter a reg plate for full MOT history, mileage check, health score, running costs, and reliability data. Free, instant, no signup.
Annual Running Costs
Flat rate (post-2017)
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
Get an insurance quote for this MERCEDES EQC 400 SPORT 4MATIC
Compare quotes and find the best deal
Reliability Verdict
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%.
At 5 years old, 86% of MERCEDES EQC 400 SPORT 4MATICs from 2021 passed their MOT first time in 2026. That's based on 442 tests across the UK. The average mileage at this age is 33,828 miles.
Got a MERCEDES EQC 400 SPORT 4MATIC you're looking at?
Enter the reg plate to check its specific MOT history, mileage, and health score.
How Does It Compare?
Mileage Analysis
33,828
Average miles
37,000
Expected for age
The average 2021 MERCEDES EQC 400 SPORT 4MATIC has 33,828 miles on the clock, which is in line with the expected 37,000 miles for a 5-year-old car, suggesting normal everyday use.
Looking at a specific MERCEDES EQC 400 SPORT 4MATIC?
Enter its reg plate for a free check with full MOT history, mileage verification, and predicted costs.
Best Year to Buy?
The most reliable year is the 2020 model with a 93% MOT pass rate, while the 2021 model has the lowest at 86%. Consider a different year if reliability is a priority.
MERCEDES EQC 400 SPORT 4MATIC by Year
Similar Cars to Consider
Check a Specific Mercedes Eqc 400 sport 4matic
Enter a reg plate to get the full MOT history, health score, and mileage verification.
Upgrade to Premium (£4.99) for stolen, finance, and write-off checks.
About the 2021 MERCEDES EQC 400 SPORT 4MATIC
The 2021 MERCEDES EQC 400 SPORT 4MATIC is a electric with a 0cc electric engine. 442 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. It sits in the bottom 90% of 2021 cars for MOT pass rates.
With an average of 33,828 miles at 5 years old, MERCEDES EQC 400 SPORT 4MATIC owners drive about as much as the UK average.
What does it cost to own a 2021 MERCEDES EQC 400 SPORT 4MATIC?
Total estimated annual running cost is £1,100 (£92/month), broken down as £500 fuel, £195 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 86% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2021 MERCEDES EQC 400 SPORT 4MATIC
At 5 years old, the MERCEDES EQC 400 SPORT 4MATIC offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
Common Issues to Watch For
Based on the 2021 MERCEDES EQC 400 SPORT 4MATIC's fuel type, age, and engine size, these are the most likely problem areas to check.
Battery Degradation
Medium riskAfter 5 years, expect some battery capacity loss. Check the battery health report for state of health (SoH). Below 80% significantly reduces range.
Charging Port
Medium riskCharging connectors and ports can develop issues from regular use. Check both AC and DC charging work correctly before purchasing.
Software Updates
Medium riskOlder EVs may miss out on manufacturer software updates that improve range and features. Check the infotainment system is up to date.
12V Auxiliary Battery
Medium riskEVs still have a standard 12V battery for accessories. These drain faster than in petrol cars and can leave you stranded if flat. Replacement is £100-£200.
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 2021 MERCEDES EQC 400 SPORT 4MATIC stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| MERCEDES EQC 400 SPORT 4MATIC(2021) | 86% | £500 | £195 | Grp 1-8 | £1100 |
| TESLA MODEL 3 LONG RANGE AWD(2021) | 88% | £500 | £190 | Grp 1-8 | £1095-£5 |
| JAGUAR I-PACE(2020) | 96% | £500 | £190 | Grp 1-8 | £945-£155 |
| TESLA MODEL 3 STANDARD RANGE +(2021) | 88% | £500 | £190 | Grp 1-8 | £1095-£5 |
| TESLA MODEL 3 PERFORMANCE AWD(2020) | 87% | £500 | £190 | Grp 1-8 | £1095-£5 |
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
TESLA MODEL 3 LONG RANGE AWD
2021 · 0cc Electric
JAGUAR I-PACE
2020 · 0cc Electric
TESLA MODEL 3 STANDARD RANGE +
2021 · 0cc Electric
Related Guides
In-depth articles relevant to the Mercedes Eqc 400 sport 4matic.
Cars That Lose Value Fastest: Models to Avoid for Depreciation
8 min read
Running CostsCheapest Cars to Run in 2026: Real Data from 19.8 Million MOT Tests
9 min read
Reliability20 Most Reliable Used Cars UK 2026: Real MOT Pass Rate Rankings
10 min read
Running CostsElectric Car Running Costs UK (2026): The Real Numbers
14 min read
Running CostsElectric vs Petrol Running Costs UK 2026: EV is £1,247 Cheaper/yr
15 min read
Check a specific MERCEDES EQC 400 SPORT 4MATIC
Enter the reg to see its MOT history, mileage check, and predicted costs.
Premium History Check
Buying a MERCEDES EQC 400 SPORT 4MATIC? Our premium check covers:
- Stolen check (PNC)
- Outstanding finance
- Write-off history (Cat A/B/N/S)
- Previous owners count
Competitors charge £10-£20 for the same data