Should I check the MOT history before buying a 2003 BMW 520?

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 520?

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 520?

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 520 vehicles have had dangerous defects recorded?

36% 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 520 reliable?

Based on MOT data from 2,240 vehicles, the 2003 BMW 520 has a first-time MOT pass rate of 76.6%, 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 520?

The most frequently recorded MOT issues on the 2003 BMW 520 are: Nearside Rear Tyre worn close to the legal limit (92.3% of vehicles), Offside Rear Tyre worn close to the legal limit (86.8% of vehicles), Parking brake: efficiency below requirements (60.2% 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 520?

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.

CarHunch

Get Started

BMW 520 (2003)

2,240 real MOT outcomes analysed • 76.6% first-time pass rate

2003 BMW 520

CarHunch analysed 2,240 real MOT records for the 2003 BMW 520. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →

On this page

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 520 falls short of the UK average with a 76.6% first-time pass rate, and more concerning, 36% of these cars have recorded a dangerous defect at some point—well above acceptable levels for a buyer considering one. This is a reliability red flag that warrants a thorough pre-purchase inspection by a BMW specialist.

At 85,719 miles on average, these 20-year-old BMWs are showing typical mileage for their age, but they're racking up nearly 4 failures and 20 advisories per test, indicating persistent electrical, suspension, and emissions issues rather than one-off problems. If you're seriously interested in this model, budget for regular specialist maintenance and walk away from any example with a history of electrical faults or suspension work.

The 2003 BMW 520 has a decent first-time pass rate (76.6%), 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

76.6%

UK average ~80%

Around average

Dangerous (ever)

36%

At least once in MOT history

Check this vehicle

Avg failures / car

3.95

Over 15.5 tests on record

High

Typical mileage

83k

Middle half: 65k–102k

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 19.7 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 2,240 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 2,240 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 92.3%

Nearside Rear Tyre worn close to the legal limit · Offside 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.

Brake wear 60.2%

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

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

Other issues 59%

Oil leak · Oil leak, but not excessive · Under-trays fitted obscuring some underside components

Suspension & steering 26.8%

Nearside Rear Anti-roll bar linkage has slight play in a ball joint

Harder to spot without a ramp — this is a good reason to book a pre-purchase inspection.

Wipers & washers 22.5%

Windscreen washer provides insufficient washer liquid

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 2,240 BMW 520 cars.

Before you buy a 2003 BMW 520

Based on MOT data from 2,240 vehicles — here's what to check.

📋 Check the full MOT history. 36% 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
Petrol (96%)	2,158	76.7%	3.95
Diesel (3%)	72	74.9%	4.1

Colour Breakdown

Based on 153,915 BMW 520 vehicles registered in the UK — across all years. From DVLA registration records.

Black 25.6%

39,331

Grey 21.6%

33,230

Blue 16.8%

25,839

Silver 15.7%

24,148

White 11%

16,857

Green 4.1%

6,315

Red 3.5%

5,369

Brown 0.6%

966

Bronze 0.5%

725

Gold 0.4%

549

Beige 0.2%

357

Purple 0.1%

229

Mileage Distribution

Most 2003 BMW 520 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.

83,249

typical

64,884

low mileage

102,139

high mileage

Half of all 2003 BMW 520 vehicles fall between 64,884 and 102,139 miles.

Is the mileage you're seeing normal?

✓ Under 64,884 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.

✓ 64,884–102,139 miles — normal for age. This is where most 2003 BMW 520s sit.

⚠ Over 137,887 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 520 — Still on the Road

Numbers are thinning — 18% of 2003 BMW 520s are still active.

Numbers are declining — 292 vehicles still getting MOTs in 2025 (18% 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

15.5

Avg MOT tests per vehicle

3.95

Avg failures per vehicle

19.7

Avg advisories per vehicle

Other model years — BMW 520: All 520 years → Which year to buy? →

1980 1981 1983 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

Or browse all models: BMW →

Compare with another model

See how the 2003 BMW 520 stacks up against a rival.

Watch for defects — worth knowing