How much does a 2012 MERCEDES UNCLASSIFIED cost to run?

Estimated annual running cost is £2,045 (£170/month), including £1245 fuel, £395 road tax, £55 MOT, and £350 predicted repairs.

What is the MOT pass rate for a 2012 MERCEDES UNCLASSIFIED?

The 2012 MERCEDES UNCLASSIFIED has a 89% MOT pass rate based on 185 tests in 2026. This ranks 152 out of 685 cars from 2012.

Which year MERCEDES UNCLASSIFIED is most reliable?

The 2021 MERCEDES UNCLASSIFIED has the highest MOT pass rate at 96%. The least reliable year is 1997 at 66%.

MERCEDES UNCLASSIFIED (2012)

Q: Is the 2012 MERCEDES UNCLASSIFIED reliable?

Good reliability. Occasional issues but generally solid. 89% of MERCEDES UNCLASSIFIEDs from 2012 passed their MOT first time in 2026, based on 185 tests. That's 7 points above the national average of 82%.

Q: What is the average mileage for a 2012 MERCEDES UNCLASSIFIED?

The average mileage for a 2012 MERCEDES UNCLASSIFIED is 66,863 miles, which is below the expected 103,600 miles for a 14-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Running costs, reliability data, and common problems from 185 real MOT tests.

Annual Cost

£2,045

£170/month

MOT Pass Rate

89%

Good

Road Tax

£395

Based on CC/year

Insurance

Grp 30-42

3000cc Diesel

Solid Option

89% pass rate, £2045/year to run. 7 points above average.

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Diesel3000cc14 years old185 tests67k miles avg

Annual Running Costs

Fuel (Diesel, 3000cc)

~40 mpg

£1,245

Road Tax

Based on 3000cc

£395

MOT Test

£55

Predicted Repairs

£350

Total per year£2,045

Per month£170/mo

Per week£39/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

89% MOT pass rate(Good)

0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's 7 points above the national average of 82%.

At 14 years old, 89% of MERCEDES UNCLASSIFIEDs from 2012 passed their MOT first time in 2026. That's based on 185 tests across the UK. The average mileage at this age is 66,863 miles.

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How Does It Compare?

Rank among 2012 cars152th of 685(top 22%)

Rank among MERCEDES models711th of 1,408(top 50%)

vs national average+7%(82% avg)

vs 2012 cars average+11%(78% avg)

vs MERCEDES average+2%(87% avg)

Mileage Analysis

66,863

Average miles

103,600

Expected for age

The average 2012 MERCEDES UNCLASSIFIED has 66,863 miles on the clock, which is below the expected 103,600 miles for a 14-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Best Year to Buy?

The most reliable year is the 2021 model with a 96% MOT pass rate, while the 1997 model has the lowest at 66%. The 2012 sits between the two at 89%.

MERCEDES UNCLASSIFIED by Year

Year	Pass Rate	Tests	Avg Mileage
2021	96%	270	14,108 mi
2020	93%	237	17,059 mi
2019	95%	176	25,080 mi
2018	92%	202	40,291 mi
2017	91%	200	39,620 mi
2016	87%	326	45,907 mi
2015	91%	252	72,531 mi
2014	86%	289	83,046 mi
2013	89%	245	52,132 mi
2012	89%	185	66,863 mi
2011	90%	126	63,066 mi
2010	92%	98	94,655 mi
2009	79%	174	100,957 mi
2008	79%	354	111,482 mi
2007	81%	259	105,351 mi
2006	81%	240	95,112 mi
2005	79%	273	101,492 mi
2004	79%	298	91,119 mi
2003	73%	178	102,840 mi
2002	84%	214	129,941 mi
2001	73%	107	121,123 mi
2000	73%	195	116,472 mi
1999	78%	223	144,511 mi
1998	81%	155	139,571 mi
1997	66%	65	104,116 mi
1996	66%	101	175,170 mi
1995	78%	45	212,804 mi
1994	74%	86	85,110 mi
1993	89%	47	159,142 mi
1992	60%	40	117,020 mi
1991	73%	33	102,932 mi
1990	83%	58	95,507 mi

Similar Cars to Consider

LAND ROVER RANGE ROVER

2013 · 2926cc Diesel

£1,900/year

88%

-1%

AUDI A4

2011 · 2967cc Diesel

£1,900/year

82%

-7%

JAGUAR XF

2014 · 2993cc Diesel

£1,900/year

84%

-5%

AUDI A5

2013 · 2967cc Diesel

£1,900/year

85%

-4%

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About the 2012 MERCEDES UNCLASSIFIED

The 2012 MERCEDES UNCLASSIFIED is a large car with a 3000cc diesel engine. 185 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 22% of all 2012 cars for reliability.

With an average of 66,863 miles at 14 years old, MERCEDES UNCLASSIFIED owners tend to use this car less than the typical driver.

2012 MERCEDES UNCLASSIFIED Fuel Costs

The 3000cc diesel engine is on the larger side, so fuel won't be this car's strong point. Expect around 40 mpg in mixed driving, which works out to roughly £1,245 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 2012 MERCEDES UNCLASSIFIED?

Total estimated annual running cost is £2,045 (£170/month), broken down as £1245 fuel, £395 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.

MERCEDES UNCLASSIFIED Reliability Trend

Newer MERCEDES UNCLASSIFIEDs show better MOT pass rates than older ones, with an average improvement of 13 percentage points.

Buying a Used 2012 MERCEDES UNCLASSIFIED

At 14 years old, the MERCEDES UNCLASSIFIED 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 2021 model has the highest pass rate at 96%.

Common Issues to Watch For

Based on the 2012 MERCEDES UNCLASSIFIED'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.

Dual Mass Flywheel

Watch out

Larger diesel engines put extra strain on the dual mass flywheel. Listen for rattling at idle. Replacement with clutch is £800-£1,500.

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 2012 MERCEDES UNCLASSIFIED stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
MERCEDES UNCLASSIFIED(2012)	89%	£1245	£395	Grp 30-42	£2045
LAND ROVER RANGE ROVER(2013)	88%	£1245	£250	Grp 30-42	£1900-£145
AUDI A4(2011)	82%	£1245	£250	Grp 30-42	£1900-£145
JAGUAR XF(2014)	84%	£1245	£250	Grp 30-42	£1900-£145
AUDI A5(2013)	85%	£1245	£250	Grp 30-42	£1900-£145

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.