BMW 730 (2017)

Estimated running costs and MOT pass rates from 1,696 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

2993cc Diesel

Great Choice

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

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Diesel2993cc9 years old1,696 tests76k miles avg

Annual Running Costs

Fuel (Diesel, 2993cc)

~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 730s from 2017 ended in a pass in 2024, when they were about 7 years old. That's based on 1,696 tests across the UK, retests included. The average mileage recorded at those tests was 76,335 miles.

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How Does It Compare?

Rank among 2017 models80th of 540(top 15%)

Rank among BMW models246th of 1,548(top 16%)

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

vs 2017 models average+7%(87% avg)

vs BMW average+6%(88% avg)

Mileage Analysis

76,335

Average miles

51,800

Expected for age

The average 2017 BMW 730 had 76,335 miles on the clock at its 2024 MOT, which is above the expected 51,800 miles for a 7-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.

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Best Year to Buy?

Of the years with at least 100 tests, the 2021 model has the highest MOT pass rate at 98%, while the 2006 model has the lowest at 81%. The 2017 scores 94%. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

BMW 730 by Year

Year	Pass Rate	Tests	Avg Mileage
2021	98%	243	41,849 mi
2020	95%	1,033	41,493 mi
2019	95%	1,966	55,627 mi
2018	95%	1,592	67,232 mi
2017	94%	1,696	76,335 mi
2016	91%	2,288	88,853 mi
2015	89%	1,345	91,832 mi
2014	89%	1,656	97,859 mi
2013	89%	875	110,696 mi
2012	88%	1,119	115,118 mi
2011	86%	1,467	119,035 mi
2010	89%	991	128,302 mi
2009	88%	806	130,274 mi
2008	82%	1,043	138,734 mi
2007	85%	927	142,639 mi
2006	81%	1,315	141,407 mi
2005	83%	694	150,286 mi
2004	83%	322	132,666 mi
2003	88%	277	139,746 mi
1995	70%	96	129,643 mi
1994	86%	70	106,349 mi
1993	68%	37	128,018 mi
1992	81%	31	126,198 mi
1991	76%	34	141,732 mi
1990	82%	57	129,365 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 2017 BMW 730

The 2017 BMW 730 is a premium performance car. Our records list a 2993cc diesel engine, though engines vary between versions. 1,696 MOT tests were recorded on this model in 2024, making it a reasonably common sight on UK roads. It ranks in the top 15% of all 2017 models for MOT pass rate.

With an average of 76,335 miles recorded at its 2024 MOT tests, BMW 730 owners cover more miles than the average driver.

2017 BMW 730 Fuel Costs

The 2993cc 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 2017 BMW 730?

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 730 Reliability Trend

Newer BMW 730s pass their MOT more often than older ones, by 7 percentage points on average, which is mostly down to age and wear.

Buying a Used 2017 BMW 730

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 2021 model has the highest pass rate at 98%.

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 2017 BMW 730 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 730(2017)	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 2017 BMW 730

Is the 2017 BMW 730 reliable?

Excellent reliability. Very few MOT failures. 94% of MOT tests on 2017 BMW 730s ended in a pass, from 1,696 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 2017 BMW 730 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 2017 BMW 730?

94% of 1,696 MOT tests on the 2017 BMW 730 ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 80th of 540 models first registered in 2017 (top 15%).

Which year BMW 730 has the best MOT pass rate?

Of the years with at least 100 tests, the 2021 BMW 730 has the highest MOT pass rate at 98% and the 2006 the lowest at 81%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2017 BMW 730?

The average mileage recorded at MOT tests on the 2017 BMW 730 is 76,335 miles, which is above the expected 51,800 miles for a 7-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.