Mercedes E450AMG LN NGT Ed PRM+MHEV4M A (2021)
Estimated running costs and MOT pass rates from 160 MOT tests in 2024.
Annual Cost
£2,563
£214/month
MOT Pass Rate
87%
Good
Road Tax
£200
Standard rate/year
Est. Insurance
Grp 30-42
2999cc Hybrid
Solid Option
87% pass rate, £2,563/year to run. 5 points above average.
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Annual Running Costs
~30 mpg (petrol-engine estimate; hybrids usually use less)
Standard rate (from April 2017)
Estimates based on 7,400 miles/year (UK average), petrol at 174.57p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included. Cars registered from April 2017 pay the £200 standard rate, plus £440 a year for five years (from the second year) if they cost over £40,000 new (over £50,000 for electric cars).
Reliability Verdict
Good reliability. Occasional issues but generally solid. That's close to the average of 82% across all models in our data.
87% of MOT tests on Mercedes E450AMG LN NGT Ed PRM+MHEV4M As from 2021 ended in a pass in 2024, when they were about 3 years old. That's based on 160 tests across the UK, retests included. The average mileage recorded at those tests was 20,791 miles.
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How Does It Compare?
Mileage Analysis
20,791
Average miles
22,200
Expected for age
The average 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A had 20,791 miles on the clock at its 2024 MOT, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
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About the 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A
The 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A is a premium performance car. Our records list a 2999cc hybrid engine, though engines vary between versions. 160 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. It sits in the bottom 12% of 2021 models for MOT pass rate.
With an average of 20,791 miles recorded at its 2024 MOT tests, Mercedes E450AMG LN NGT Ed PRM+MHEV4M A owners drive about as much as the UK average.
2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A Fuel Costs
The 2999cc hybrid engine is on the larger side, so fuel won't be this car's strong point. Our estimate uses around 30 mpg, the figure for a petrol engine of this size, which works out to roughly £1,958 per year with petrol at 174.57p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year). As a hybrid it should use less than that, and real-world fuel costs depend a lot on how much electric-only driving you do.
What does it cost to own a 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A?
Total estimated annual running cost is £2,563 (£214/month), broken down as £1,958 fuel, £200 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 87% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A
At 5 years old, the Mercedes E450AMG LN NGT Ed PRM+MHEV4M A 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
These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.
Hybrid Battery Health
Medium riskAfter 5 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
Medium 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 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A stacks up against similar cars for estimated annual running costs, insurance group, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Est. Ins. Group | Total/yr |
|---|---|---|---|---|---|
| Mercedes E450AMG LN NGT Ed PRM+MHEV4M A(2021) | 87% | £1,958 | £200 | Grp 30-42 | £2,563 |
| Toyota RAV4(2020) | 95% | £1,958 | £200 | Grp 25-38 | £2,413-£150 |
| BMW X5 XDRIVE45E M Sport Auto(2021) | 88% | £1,958 | £200 | Grp 30-42 | £2,563same |
| BMW M340I Xdrive MHEV Auto(2021) | 93% | £1,958 | £200 | Grp 30-42 | £2,413-£150 |
| Lexus RX(2019) | 96% | £1,958 | £200 | Grp 35-50 | £2,413-£150 |
Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.
Questions about the 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A
Is the 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A reliable?
Good reliability. Occasional issues but generally solid. 87% of MOT tests on 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M As ended in a pass, from 160 tests (DVSA MOT data for tests in 2024, retests included). That's 5 points above the average of 82% across all models in the same data.
How much does a 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A cost to run?
Our estimate is £2,563 a year (£214 a month): £1,958 fuel, £200 road tax, £55 MOT and £350 predicted repairs, based on 7,400 miles a year. Insurance is not included.
What is the MOT pass rate for a 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A?
87% of 160 MOT tests on the 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 2939th of 3,336 models first registered in 2021 (bottom 12%).
What is the average mileage for a 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A?
The average mileage recorded at MOT tests on the 2021 Mercedes E450AMG LN NGT Ed PRM+MHEV4M A is 20,791 miles, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
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 RAV4
2020 · 2500cc Hybrid
BMW X5 XDRIVE45E M Sport Auto
2021 · 2998cc Hybrid
BMW M340I Xdrive MHEV Auto
2021 · 2998cc Hybrid
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