BMW 630 (2018)

Estimated running costs and MOT pass rates from 49 MOT tests in 2024.

Annual Cost

£2,131

£178/month

MOT Pass Rate

94%

Excellent

Road Tax

£200

Standard rate/year

Est. Insurance

Grp 30-42

3000cc Diesel

Great Choice

94% pass rate, £2,131/year to run. 12 points above average.

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Diesel3000cc8 years old49 tests53k miles avg

Annual Running Costs

Fuel (Diesel, 3000cc)

~40 mpg

£1,676

Road Tax

Standard rate (from April 2017)

£200

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£2,131

Per month£178/mo

Per week£41/wk

Estimates based on 7,400 miles/year (UK average), diesel at 199.33p a litre (GOV.UK weekly average, week of 19 October 2026), 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

94% MOT pass rate(Excellent)

0%All-model avg: 82%100%

Excellent reliability. Very few MOT failures. That's 12 points above the average of 82% across all models in our data. It also outperforms the BMW brand average of 88%.

94% of MOT tests on BMW 630s from 2018 ended in a pass in 2024, when they were about 6 years old. That's based on 49 tests across the UK, retests included. The average mileage recorded at those tests was 52,719 miles.

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How Does It Compare?

Rank among 2018 models144th of 607(top 24%)

Rank among BMW models311th of 1,548(top 21%)

vs average of all models+12%(82% avg)

vs 2018 models average+5%(89% avg)

vs BMW average+6%(88% avg)

Mileage Analysis

52,719

Average miles

44,400

Expected for age

The average 2018 BMW 630 had 52,719 miles on the clock at its 2024 MOT, which is in line with the expected 44,400 miles for a 6-year-old car, suggesting normal everyday use.

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Best Year to Buy?

Of the years with at least 100 tests, the 2010 model has the highest MOT pass rate at 91%, while the 2011 model has the lowest at 79%. The 2018 scores 94%. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

BMW 630 by Year

Year	Pass Rate	Tests	Avg Mileage
2018	94%	49	52,719 mi
2011	79%	102	79,763 mi
2010	91%	105	100,748 mi
2009	88%	244	94,154 mi
2008	84%	857	106,066 mi
2007	83%	1,713	108,771 mi
2006	82%	1,999	117,349 mi
2005	81%	1,382	117,637 mi

Similar Cars to Consider

Mercedes E

2019 · 2925cc Diesel

£2,131/year

90%

-4%

Mercedes GLC

2018 · 2987cc Diesel

£2,131/year

91%

-3%

Audi A5

2017 · 2967cc Diesel

£2,281/year

89%

-5%

Ford Ranger

2019 · 3198cc Diesel

£2,281/year

87%

-7%

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About the 2018 BMW 630

The 2018 BMW 630 is a premium performance car. Our records list a 3000cc diesel engine, though engines vary between versions. 49 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. It ranks in the top 24% of all 2018 models for MOT pass rate.

With an average of 52,719 miles recorded at its 2024 MOT tests, BMW 630 owners drive about as much as the UK average.

2018 BMW 630 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 £1,676 per year with diesel at 199.33p per litre (GOV.UK weekly average, week of 19 October 2026; 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 2018 BMW 630?

Total estimated annual running cost is £2,131 (£178/month), broken down as £1,676 fuel, £200 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 94% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

BMW 630 Reliability Trend

Newer BMW 630s pass their MOT more often than older ones, by 4 percentage points on average, which is mostly down to age and wear.

Buying a Used 2018 BMW 630

At 8 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 2010 model has the highest pass rate at 91%. Note: with only 49 tests in our data, these figures should be treated as indicative rather than definitive.

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.

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.

AdBlue System

Medium risk

Post-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.

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.

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 2018 BMW 630 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
BMW 630(2018)	94%	£1,676	£200	Grp 30-42	£2,131
Mercedes E(2019)	90%	£1,676	£200	Grp 30-42	£2,131same
Mercedes GLC(2018)	91%	£1,676	£200	Grp 30-42	£2,131same
Audi A5(2017)	89%	£1,676	£200	Grp 30-42	£2,281+£150
Ford Ranger(2019)	87%	£1,676	£200	Grp 35-50	£2,281+£150

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 2018 BMW 630

Is the 2018 BMW 630 reliable?

Excellent reliability. Very few MOT failures. 94% of MOT tests on 2018 BMW 630s ended in a pass, from 49 tests (DVSA MOT data for tests in 2024, retests included). That's 12 points above the average of 82% across all models in the same data.

How much does a 2018 BMW 630 cost to run?

Our estimate is £2,131 a year (£178 a month): £1,676 fuel, £200 road tax, £55 MOT and £200 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2018 BMW 630?

94% of 49 MOT tests on the 2018 BMW 630 ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 144th of 607 models first registered in 2018 (top 24%).

Which year BMW 630 has the best MOT pass rate?

Of the years with at least 100 tests, the 2010 BMW 630 has the highest MOT pass rate at 91% and the 2011 the lowest at 79%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2018 BMW 630?

The average mileage recorded at MOT tests on the 2018 BMW 630 is 52,719 miles, which is in line with the expected 44,400 miles for a 6-year-old car, suggesting normal everyday use.