MERCEDES S 580 L AMG LN PREM + EXEC E A (2021)
Running costs, reliability data, and common problems from 52 real MOT tests.
Annual Cost
£2,042
£170/month
MOT Pass Rate
100%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 30-42
2999cc Hybrid
Great Choice
100% pass rate, £2042/year to run. 18 points above average.
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Annual Running Costs
~30 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 18 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 5 years old, 100% of MERCEDES S 580 L AMG LN PREM + EXEC E As from 2021 passed their MOT first time in 2026. That's based on 52 tests across the UK. The average mileage at this age is 32,143 miles.
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How Does It Compare?
Mileage Analysis
32,143
Average miles
37,000
Expected for age
The average 2021 MERCEDES S 580 L AMG LN PREM + EXEC E A has 32,143 miles on the clock, which is in line with the expected 37,000 miles for a 5-year-old car, suggesting normal everyday use.
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MERCEDES S 580 L AMG LN PREM + EXEC E A by Year
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About the 2021 MERCEDES S 580 L AMG LN PREM + EXEC E A
The 2021 MERCEDES S 580 L AMG LN PREM + EXEC E A is a large car with a 2999cc hybrid engine. 52 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 1% of all 2021 cars for reliability.
With an average of 32,143 miles at 5 years old, MERCEDES S 580 L AMG LN PREM + EXEC E A owners drive about as much as the UK average.
2021 MERCEDES S 580 L AMG LN PREM + EXEC E A Fuel Costs
The 2999cc hybrid engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 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 2021 MERCEDES S 580 L AMG LN PREM + EXEC E A?
Total estimated annual running cost is £2,042 (£170/month), broken down as £1592 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 100% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
MERCEDES S 580 L AMG LN PREM + EXEC E A Reliability Trend
Older MERCEDES S 580 L AMG LN PREM + EXEC E As tend to have better MOT pass rates than newer ones, with an average decline of 6 percentage points across model years.
Buying a Used 2021 MERCEDES S 580 L AMG LN PREM + EXEC E A
At 5 years old, the MERCEDES S 580 L AMG LN PREM + EXEC E A offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. Note: with only 52 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2021 MERCEDES S 580 L AMG LN PREM + EXEC E A's fuel type, age, and engine size, these are the most likely problem areas to check.
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 S 580 L AMG LN PREM + EXEC E A stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| MERCEDES S 580 L AMG LN PREM + EXEC E A(2021) | 100% | £1592 | £195 | Grp 30-42 | £2042 |
| TOYOTA RAV4(2020) | 95% | £1592 | £190 | Grp 25-38 | £2037-£5 |
| BMW X5 XDRIVE45E M SPORT AUTO(2021) | 88% | £1592 | £190 | Grp 30-42 | £2187+£145 |
| BMW M340I XDRIVE MHEV AUTO(2021) | 93% | £1592 | £190 | Grp 30-42 | £2037-£5 |
| LEXUS RX(2019) | 96% | £1592 | £190 | Grp 35-50 | £2037-£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
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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