Should I check the MOT history before buying a 2003 BMW 730?

Yes. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. A full MOT history analysis will highlight patterns that a single test result won't reveal.

What corrosion should I look for when inspecting a 2003 BMW 730?

Check brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that is expensive to fix and can fail an MOT.

How are tyres and brakes typically on a 2003 BMW 730?

Tyres and brakes are the most common advisory items on vehicles of this age. Budget for replacement if they are near the limit, and factor this into your offer price.

How many 2003 BMW 730 vehicles have had dangerous defects recorded?

28% of these vehicles have had a dangerous defect recorded. Search the registration on CarHunch — the full MOT history will show exactly what was flagged and whether it was resolved.

Is the 2003 BMW 730 reliable?

Based on MOT data from 976 vehicles, the 2003 BMW 730 has a first-time MOT pass rate of 79.6%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2003 BMW 730?

The most frequently recorded MOT issues on the 2003 BMW 730 are: Offside Rear Tyre worn close to the legal limit (99.9% of vehicles), Nearside Rear Tyre worn close to the legal limit (96.6% of vehicles), Nearside Front Tyre worn close to the legal limit (57.7% of vehicles). These figures are based on actual MOT test records — search a specific registration on CarHunch to see its individual history.

Do I need an HPI check when buying a 2003 BMW 730?

Yes. The MOT history will not show outstanding finance, insurance write-offs, or stolen status. An HPI check covers these areas and should be part of any used car purchase.

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BMW 730 (2003)

976 real MOT outcomes analysed • 79.6% first-time pass rate

2003 BMW 730

CarHunch analysed 976 real MOT records for the 2003 BMW 730. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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AI Analysis Reliability Overview Common Issues Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2003 BMW 730 barely keeps pace with the UK average at 79.5% first-time pass rate, and nearly 28% of these cars have recorded dangerous defects—a significant concern for a buyer. Petrol versions pass slightly more often (81.1%) than diesels (79.1%), but the difference is marginal.

These cars are sitting around 109,000 miles on average, which is reasonable for their age, yet they're racking up an average of 3.3 failures and 16.5 advisories per MOT test—suggesting widespread wear across multiple systems. Before buying, get a full pre-purchase inspection focusing on suspension, brakes, and cooling systems, which are typical failure points on high-mileage German saloons of this era.

The 2003 BMW 730 has a decent first-time pass rate (79.6%), but a higher-than-average share of vehicles have had serious defects recorded — the individual vehicle's history matters a lot here.

⚠️ Over 1 in 5 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.

First-time pass

79.6%

UK average ~80%

Around average

Dangerous (ever)

27.7%

At least once in MOT history

Check this vehicle

Avg failures / car

3.3

Over 14.7 tests on record

High

Typical mileage

109k

Middle half: 87k–131k

For context

🔧 Average reliability. Passes at roughly the UK rate — not a standout, not a problem vehicle. Individual history makes all the difference.

🔧 Expect consumable spend. An average of 16.5 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.

🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 976 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.

Watch for defects — worth knowing

What tends to go wrong

Across 976 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 99.9%

Offside Rear Tyre worn close to the legal limit · Nearside Rear Tyre worn close to the legal limit · Nearside Front Tyre worn close to the legal limit · …

Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.

Other issues 57.2%

Under-trays fitted obscuring some underside components · Engine covers fitted obscuring some components in the engine bay · Oil leak · …

Brake wear 31.4%

Rear Brake pad(s) wearing thin · Front Brake pad(s) wearing thin · Parking brake: efficiency below requirements · …

Ask the seller when brakes were last serviced. If they don't know, factor in the cost.

Lighting 25.8%

Supplementary Restraint System warning lamp indicates a fault

Usually cheap to fix. Worth confirming all lights work before collecting.

Data covers a 3-year window centred on 2003.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 976 BMW 730 cars.

Before you buy a 2003 BMW 730

Based on MOT data from 976 vehicles — here's what to check.

📋 Check the full MOT history. 27.7% of these vehicles have had a dangerous defect recorded - recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle.
🔍 Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price. Inspection →
📄 Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically. History Get 20% off via CarHunch

Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Diesel (81%)	787	79.2%	3.35
Petrol (19%)	186	81.1%	3.08

Colour Breakdown

Based on 21,623 BMW 730 vehicles registered in the UK — across all years. From DVLA registration records.

Black 32.7%

7,071

Grey 19.6%

4,233

Silver 18.3%

3,949

Blue 13.9%

3,014

White 6.1%

1,315

Green 3.8%

828

Red 3.5%

757

Beige 0.6%

130

Bronze 0.5%

114

Gold 0.4%

Yellow 0.3%

Brown 0.2%

Mileage Distribution

Most 2003 BMW 730 vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.

109,032

typical

86,903

low mileage

130,972

high mileage

Half of all 2003 BMW 730 vehicles fall between 86,903 and 130,972 miles.

Is the mileage you're seeing normal?

✓ Under 86,903 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.

✓ 86,903–130,972 miles — normal for age. This is where most 2003 BMW 730s sit.

⚠ Over 176,812 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2003 BMW 730 — Still on the Road

Numbers are thinning — 17% of 2003 BMW 730s are still active.

Numbers are declining — 111 vehicles still getting MOTs in 2025 (17% of peak).

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.

MOT History Averages

14.7

Avg MOT tests per vehicle

3.3

Avg failures per vehicle

16.5

Avg advisories per vehicle

Other model years — BMW 730: All 730 years → Which year to buy? →

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Compare with another model

See how the 2003 BMW 730 stacks up against a rival.

Watch for defects — worth knowing