How much does a 2014 MERCEDES B-CLASS cost to run?

Estimated annual running cost is £1,707 (£142/month), including £1037 fuel, £265 road tax, £55 MOT, and £350 predicted repairs.

What is the MOT pass rate for a 2014 MERCEDES B-CLASS?

The 2014 MERCEDES B-CLASS has a 83% MOT pass rate based on 15,382 tests in 2026. This ranks 326 out of 562 cars from 2014.

Which year MERCEDES B-CLASS is most reliable?

The 2019 MERCEDES B-CLASS has the highest MOT pass rate at 93%. The least reliable year is 2006 at 71%.

What is the average mileage for a 2014 MERCEDES B-CLASS?

The average mileage for a 2014 MERCEDES B-CLASS is 72,344 miles, which is in line with the expected 88,800 miles for a 12-year-old car, suggesting normal everyday use.

MERCEDES B-CLASS (2014)

Q: Is the 2014 MERCEDES B-CLASS reliable?

Good reliability. Occasional issues but generally solid. 83% of MERCEDES B-CLASSs from 2014 passed their MOT first time in 2026, based on 15,382 tests. That's 1 points above the national average of 82%.

Running costs, reliability data, and common problems from 15,382 real MOT tests.

Annual Cost

£1,707

£142/month

MOT Pass Rate

83%

Good

Road Tax

£265

Based on CC/year

Insurance

Grp 18-32

1796cc Diesel

Solid Option

83% pass rate, £1707/year to run. Close to the national average.

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Diesel1796cc12 years old15,382 tests72k miles avg

Annual Running Costs

Fuel (Diesel, 1796cc)

~48 mpg

£1,037

Road Tax

Based on 1796cc

£265

MOT Test

£55

Predicted Repairs

£350

Total per year£1,707

Per month£142/mo

Per week£33/wk

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

83% MOT pass rate(Good)

0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the MERCEDES brand average of 87%.

At 12 years old, 83% of MERCEDES B-CLASSs from 2014 passed their MOT first time in 2026. That's based on 15,382 tests across the UK. The average mileage at this age is 72,344 miles.

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How Does It Compare?

Rank among 2014 cars326th of 562(top 58%)

Rank among MERCEDES models963th of 1,408(top 68%)

vs national average+1%(82% avg)

vs 2014 cars average+2%(81% avg)

vs MERCEDES average-4%(87% avg)

Mileage Analysis

72,344

Average miles

88,800

Expected for age

The average 2014 MERCEDES B-CLASS has 72,344 miles on the clock, which is in line with the expected 88,800 miles for a 12-year-old car, suggesting normal everyday use.

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Best Year to Buy?

The most reliable year is the 2019 model with a 93% MOT pass rate, while the 2006 model has the lowest at 71%. The 2014 sits between the two at 83%.

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

FORD FIESTA

2013 · 1399cc Diesel

£1,490/year

77%

-6%

VOLKSWAGEN GOLF

2015 · 1968cc Diesel

£1,577/year

89%

+6%

VAUXHALL ASTRA

2013 · 1700cc Diesel

£1,727/year

79%

-4%

AUDI A3

2015 · 1598cc Diesel

£1,445/year

88%

+5%

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About the 2014 MERCEDES B-CLASS

The 2014 MERCEDES B-CLASS is a family car with a 1796cc diesel engine. 15,382 of these vehicles were MOT tested in 2026, making it one of the most commonly tested cars on UK roads. Among all cars from 2014, the average MOT pass rate is 81%, and this model beats that benchmark.

With an average of 72,344 miles at 12 years old, MERCEDES B-CLASS owners drive about as much as the UK average.

2014 MERCEDES B-CLASS Fuel Costs

The 1796cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.

What does it cost to own a 2014 MERCEDES B-CLASS?

Total estimated annual running cost is £1,707 (£142/month), broken down as £1037 fuel, £265 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 83% pass rate. Keeping on top of servicing will help avoid surprises.

MERCEDES B-CLASS Reliability Trend

Newer MERCEDES B-CLASSs show better MOT pass rates than older ones, with an average improvement of 14 percentage points.

Buying a Used 2014 MERCEDES B-CLASS

At 12 years old, the MERCEDES B-CLASS is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2019 model has the highest pass rate at 93%. With 15,382 MOT tests in our data, there's strong statistical confidence in these figures.

Common Issues to Watch For

Based on the 2014 MERCEDES B-CLASS's fuel type, age, and engine size, these are the most likely problem areas to check.

DPF (Diesel Particulate Filter)

Watch out

Short journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.

Turbo Wear

Watch out

Diesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.

EGR Valve

Watch out

Exhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.

Rust and Corrosion

Watch out

At 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.

Suspension Bushings

Watch out

Rubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.

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 2014 MERCEDES B-CLASS stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
MERCEDES B-CLASS(2014)	83%	£1037	£265	Grp 18-32	£1707
FORD FIESTA(2013)	77%	£905	£30	Grp 8-20	£1490-£217
VOLKSWAGEN GOLF(2015)	89%	£1037	£135	Grp 18-32	£1577-£130
VAUXHALL ASTRA(2013)	79%	£1037	£135	Grp 18-32	£1727+£20
AUDI A3(2015)	88%	£905	£135	Grp 12-25	£1445-£262

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.