Mercedes Auto-Sleepers

Reliability, estimated running costs, and MOT data across 3 model years from 186 MOT tests in 2024.

Avg Pass Rate

96%

Total Tests

186

Model Years

2017 to 2021

Years Covered

About the Mercedes Auto-Sleepers

The Mercedes Auto-Sleepers was MOT tested 186 times in 2024 (DVSA data, retests included) across 3 model years (2017 to 2021), with an average pass rate of 96%. That's comfortably above the average of 82% across all models in our data. Our records list diesel versions.

Mileage Across Years

The oldest model in our data (2017) averages 14,245 miles, while the newest (2021) averages 8,241 miles.

Compared to the Mercedes brand average of 87%, the Auto-Sleepers performs 9 points better, making it one of the more reliable options in the Mercedes range.

Estimated Running Costs

Fuel (Diesel, 2143cc)

£1,676

Road Tax

£200

MOT Test

£55

Predicted Repairs

£350

Total per year£2,281

Per month£190/mo

Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.

Full 2021 details

How reliable is the Mercedes Auto-Sleepers?

vs average of all models+14% (82% avg)

vs Mercedes brand average+9% (87% avg)

Mercedes Auto-Sleepers by Year

Click any year to see detailed running costs, reliability data, and comparisons with similar cars.

Year	Pass Rate	Tests	Avg Mileage
2021	89%	36	8,241 mi
2018	99%	110	8,768 mi
2017	100%	40	14,245 mi

Questions about the Mercedes Auto-Sleepers

Is the Mercedes Auto-Sleepers reliable?

Across its 3 model years in our data (2017 to 2021), the Mercedes Auto-Sleepers averages a 96% MOT pass rate, from 186 tests (DVSA MOT data for tests in 2024, retests included). That's 14 points above the average of 82% across all models in the same data.