Mercedes B-Class (2017)

Estimated running costs and MOT pass rates from 9,693 MOT tests in 2024.

Annual Cost

£1,160

£97/month

MOT Pass Rate

88%

Good

Road Tax

£200

Standard rate/year

Est. Insurance

n/a

Electric

Solid Option

88% pass rate, £1,160/year to run. 6 points above average.

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Electric9 years old9,693 tests48k miles avg

Annual Running Costs

Electricity

Home charging at about 7.5p a mile

£555

Road Tax

Standard rate (from April 2017)

£200

MOT Test

£55

Predicted Repairs

£350

Total per year£1,160

Per month£97/mo

Per week£22/wk

Estimates based on 7,400 miles/year (UK average), home charging at about 7.5p a mile, 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

88% MOT pass rate(Good)

0%All-model avg: 82%100%

Good reliability. Occasional issues but generally solid. That's 6 points above the average of 82% across all models in our data.

88% of MOT tests on Mercedes B-Classs from 2017 ended in a pass in 2024, when they were about 7 years old. That's based on 9,693 tests across the UK, retests included. The average mileage recorded at those tests was 48,392 miles.

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How Does It Compare?

Rank among 2017 models290th of 540(bottom half)

Rank among Mercedes models728th of 1,376(bottom half)

vs average of all models+6%(82% avg)

vs 2017 models average+1%(87% avg)

vs Mercedes average+1%(87% avg)

Mileage Analysis

48,392

Average miles

51,800

Expected for age

The average 2017 Mercedes B-Class had 48,392 miles on the clock at its 2024 MOT, which is in line with the expected 51,800 miles for a 7-year-old car, suggesting normal everyday use.

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Best Year to Buy?

Of the years with at least 100 tests, the 2019 model has the highest MOT pass rate at 93%, while the 2006 model has the lowest at 71%. The 2017 scores 88%. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

Mercedes B-Class by Year

Year	Pass Rate	Tests	Avg Mileage
2020	98%	47	23,364 mi
2019	93%	912	29,781 mi
2018	90%	6,729	39,021 mi
2017	88%	9,693	48,392 mi
2016	87%	9,657	55,381 mi
2015	86%	9,871	64,066 mi
2014	83%	15,382	72,344 mi
2013	82%	13,421	78,118 mi
2012	81%	11,092	83,827 mi
2011	73%	6,779	84,302 mi
2010	74%	8,819	90,612 mi
2009	74%	8,277	95,335 mi
2008	71%	6,925	100,673 mi
2007	72%	5,184	101,539 mi
2006	71%	4,235	103,535 mi
2005	73%	805	105,799 mi

Similar Cars to Consider

Volvo XC90

2018 · Electric

£1,160/year

89%

+1%

Hyundai Kona

2019 · Electric

£1,010/year

92%

+4%

Jaguar I-Pace

2019 · Electric

£1,010/year

94%

+6%

Smart (MCC) Fortwo

2017 · Electric

£1,160/year

88%

same

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About the 2017 Mercedes B-Class

The 2017 Mercedes B-Class is a premium car. Our records list this model year as electric, but most of the model's other years are petrol or diesel, so the fuel type and running costs here may be wrong. 9,693 MOT tests were recorded on this model in 2024, making it a reasonably common sight on UK roads. Among all models from 2017, the average MOT pass rate is 87%, and this model beats that benchmark.

With an average of 48,392 miles recorded at its 2024 MOT tests, Mercedes B-Class owners drive about as much as the UK average.

What does it cost to own a 2017 Mercedes B-Class?

Total estimated annual running cost is £1,160 (£97/month), broken down as £555 electricity, £200 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 88% pass rate. Keeping on top of servicing will help avoid surprises.

Mercedes B-Class Reliability Trend

Newer Mercedes B-Classs pass their MOT more often than older ones, by 14 percentage points on average, which is mostly down to age and wear.

Buying a Used 2017 Mercedes B-Class

At 9 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 2019 model has the highest pass rate at 93%. With 9,693 MOT tests in our data, there's strong statistical confidence in these figures.

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.

Suspension Wear

Medium risk

Shock absorbers, springs, and anti-roll bar links typically need attention around this age. Listen for clunks over bumps and check for uneven tyre wear.

Service History

Low risk

Always 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 2017 Mercedes B-Class 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 B-Class(2017)	88%	£555	£200	n/a	£1,160
Volvo XC90(2018)	89%	£555	£200	n/a	£1,160same
Hyundai Kona(2019)	92%	£555	£200	n/a	£1,010-£150
Jaguar I-Pace(2019)	94%	£555	£200	n/a	£1,010-£150
Smart (MCC) Fortwo(2017)	88%	£555	£200	n/a	£1,160same

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 2017 Mercedes B-Class

Is the 2017 Mercedes B-Class reliable?

Good reliability. Occasional issues but generally solid. 88% of MOT tests on 2017 Mercedes B-Classs ended in a pass, from 9,693 tests (DVSA MOT data for tests in 2024, retests included). That's 6 points above the average of 82% across all models in the same data.

How much does a 2017 Mercedes B-Class cost to run?

Our estimate is £1,160 a year (£97 a month): £555 electricity, £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 2017 Mercedes B-Class?

88% of 9,693 MOT tests on the 2017 Mercedes B-Class ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 290th of 540 models first registered in 2017 (bottom half).

Which year Mercedes B-Class has the best MOT pass rate?

Of the years with at least 100 tests, the 2019 Mercedes B-Class has the highest MOT pass rate at 93% and the 2006 the lowest at 71%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2017 Mercedes B-Class?

The average mileage recorded at MOT tests on the 2017 Mercedes B-Class is 48,392 miles, which is in line with the expected 51,800 miles for a 7-year-old car, suggesting normal everyday use.