Calculate my fail sheet

2005 BMW 523 MOT pass rate

Check your postcode

Pass rate by postcode →

Pass rate

76.9%

Around average — 4.5 pts ahead of the 72.4% that cars this age and mileage manage.

Across 771 recorded tests.

Typical repair bill £14–£40

Which year to buy

  • Best 2013 96.0% pass
  • Avoid 2000 74.8% pass

Across the 10 years on record, a spread of 21.2 points. See every year →

First-attempt pass
71.3%
Typical mileage
116k mi

The 2005 BMW 523 MOT pass rate is 76.9% of its MOT tests — 4.5 points ahead of what its age and mileage predict. Brakes is the biggest single reason it fails, at 22.8% of what testers record.

MOT PASS RATES

The 2005 BMW 523 on the real record

76.9% of 2005 BMW 523 MOTs passed — 771 tests, 2023–2025

Pass rate

The answer from the DVSA's class-4 MOT records.

Expert verdict

Emissions & leaks: 2.0× the national share

Emissions & leaks make up 11.3% of everything recorded on the 2005 BMW 523, against 5.5% nationally — 5.8 points above. Brakes are still the single largest share at 22.8%, but at 20.9% nationally that one is ordinary. A smoky diesel or a leaking joint fails on emissions more often than on wear, so ask for a recent emissions printout.

Written from this page's own figures: fault shares against the national composition, the like-for-like pass rate, and the priced repair list. How these are worked out

Watching a BMW 523? Get an email when these numbers change .

How does the 2005 BMW 523 compare?

Cars of this age and mileage average 72.4%, so this figure is 4.5 points ahead of what its age and mileage predict. On a first attempt, before any retests, the figure drops to 71.3%. The median 2005 BMW 523 in this dataset had covered 116,296 mi.

98% of the tests on this vehicle ran on Petrol, which passed 76.8% of the time. Pass rates also shift with the test month: tests recorded October–March passed 75.7% of the time, April–September 78.5%.

The single most recorded failure item is "Srs malfunction indicator lamp warning lamp indicates a fault", noted on 4.54% of tests.

  • 771 recorded tests behind this page.
  • 76.9% overall pass rate, 71.3% on a first attempt.
  • Across every year of the BMW 523, the average is 79.6% — best year 2013 (96.0%), worst 2000 (74.8%).

Figures count every completed test on this vehicle-year in the dataset, including retests. See methodology for the exact definition.

This page's data

Tests analysed
771
Typical mileage (median)
116,296 mi
Make and model
BMW 523
Updated
2026-11-07

Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.

Top part to budget for

Indicator Bulb

Usually a DIY or independent-garage job.

Does mileage affect the 523 MOT pass rate?

0-30k 100.0%
30-60k 82.9%
60-90k 75.9%
90-120k 75.4%
120k+ 77.7%

Pass rate by odometer reading. Bar lengths start at 67% so small gaps stay visible.

Fuel type and reliability

Petrol 76.8%
Diesel 83.3%

Pass rate by fuel type. Petrol is the most common here (98% of tests).

Where the BMW 523 is most common

Across all 523 model years on record (2000–2013): 2,533 BMW 523 cars tested in a recordable postcode area, across 5,529 tests. London (E) has the most, with 107 cars tested there. Cars are counted by the postcode area of the MOT station, so this is where they were tested, not necessarily where their owners live.

# Postcode area Cars Share of all Tests Pass rate
1 London (E) 107 4.2% 212 89.6%
2 London (SE) 73 2.9% 157 82.2%
3 London (NW) 73 2.9% 150 86.0%
4 Wembley (HA) 72 2.8% 134 85.1%
5 London (N) 67 2.6% 116 87.1%
6 Birmingham (B) 65 2.6% 128 89.1%
7 High Wycombe (HP) 65 2.6% 115 82.6%
8 Hayes (UB) 63 2.5% 110 87.3%
9 Romford (RM) 61 2.4% 113 80.5%
10 Croydon (CR) 57 2.3% 113 80.5%
11 Hounslow (TW) 56 2.2% 97 85.6%
12 Reading (RG) 52 2.1% 115 78.3%
13 London (W) 44 1.7% 99 84.8%
14 Guildford (GU) 41 1.6% 94 74.5%
15 Slough (SL) 39 1.5% 71 90.1%
16 Enfield (EN) 39 1.5% 65 89.2%
17 London (SW) 37 1.5% 94 75.5%
18 Peterborough (PE) 36 1.4% 72 76.4%
19 Ilford (IG) 36 1.4% 59 86.4%
20 Crawley (RH) 34 1.3% 74 77.0%

The twenty areas with the most BMW 523 cars in the record, sorted by car count — sort the columns for a different question. Cars tested at a station whose postcode area could not be resolved are counted in the model's total but in no area, so the shares add up to slightly under 100% even across every area, and an area's cars are a subset of the model's. Pass rate is blank below 30 tests in an area, where a percentage is noise rather than a finding. How this model's pass rate varies by postcode →

Regional pass rates for the 523

Region Tests Pass rate
South East 226 79.6%
London 146 80.1%
North West 66 75.8%
Scotland 57 66.7%
West Midlands 53 79.2%
East of England 51 78.4%
South West 51 66.7%
East Midlands 47 72.3%
Wales 30 76.7%
Yorkshire 30 73.3%

Regions come from the postcode area recorded at the test station. Areas on region borders are assigned to the region with the majority of their population.

What fails a 2005 523

Everything a tester recorded on this vehicle, grouped into the inspection sections that produced it. The notch on each bar is the national share, so you can see at a glance whether this car is unusual or just ordinary.

Brakes 22.8%
+1.9 pts vs national national 20.9% Price brakes parts
Suspension 19.4%
−1.6 pts vs national national 21.0% Price suspension parts
Lamps & electrics 16.4%
+4.2 pts vs national national 12.2% Order bulbs & wipers
Tyres 12.9%
−6.9 pts vs national national 19.8% Compare tyre prices
Show the other 6 fault categories
  • Emissions & leaks 11.3%
  • Advisories 4.5%
  • Visibility 4.0%
  • Seat belts 2.9%
  • Steering 1.8%
  • Identification 1.7%

Shares are of every item recorded on 2005 BMW 523 tests — a composition, so they add to 100% across all sections, not per test.

A test can record several items, so these percentages do not add up to 100%. The exact strings, with prices, are in the full DVSA record at the bottom of this page.

Before your test

Three checks worth doing on a 2005 523

These are not generic tips — they are the faults recorded most often on this exact model, rewritten as things you can check yourself. All three take about ten minutes and cost nothing.

  1. Check the lights 4.5% of tests

    “srs malfunction indicator lamp warning lamp indicates a fault”

    Switch everything on and walk round the car: both headlamps on dip and main, every indicator, both brake lights, reverse, fog and the two number-plate lamps. A bulb is a few pounds and a five-minute job.

  2. Check the suspension joints 3.2% of tests

    “ball joint dust cover severely deteriorated”

    With the car parked on level ground, rock the top of each front wheel in and out while someone watches the suspension arm. Clunks, or rubber boots split and greasy, are what testers record here.

  3. Check the coil springs 2.5% of tests

    “coil spring fractured or broken”

    Look up inside each wheel arch with a torch, all the way round the spring. A snapped spring usually breaks at the very bottom coil, where a quick glance will not reach.

Shares are the proportion of tests on this vehicle that recorded the item, so they overlap: one test can record several.

What it costs to get a 2005 523 through its MOT

Across the 10 items that are recorded most often on this model, the average repair comes to £14–£40 — and 56% of those repairs are parts that cost under £30.

Average repair across the 10 common items
£14–£40
Cheapest common item: srs malfunction indicator lamp warning lamp…
£3–£12
Dearest common item: rbt (sp) efficiency below requirements
£45–£110
Common items a careful owner can do at home
90%
Repairs that still cost under £30
56%

Estimates from typical UK parts prices, weighted by how often each item appears in 771 MOT tests on this vehicle. They exclude diagnostics, retest fees and garage labour where the part is a DIY fit, and they are not figures from the DVSA dataset. Older and higher-mileage examples cost more than the average. How these estimates are built → · All MOT repair costs → · Cheapest cars to put through a test →

Every year of the 523, side by side

10 model years on record, from 2000 to 2013. Across them the pass rate runs from 74.8% to 96.0% — a spread of 21.2 points. The bar under each year is the item that failed it most often.

  1. 2000 74.8% headlamp lens slightly defective
  2. 2005 76.9%
    srs malfunction indicator lamp…
  3. 2006 79.9% windscreen damaged but not…
  4. 2007 78.1% malfunction indicator lamp…
  5. 2008 81.0% linkage ball joint dust cover…
  6. 2009 80.9% malfunction indicator lamp…
  7. 2010 82.2% coil spring fractured or broken
  8. 2011 83.3% windscreen damaged but not…
  9. 2012 95.4% brake pads less than 1.5 mm thick
  10. 2013 96.0% catch deteriorated so the door…

Colour is the pass rate on a fixed scale, so a block means the same thing on any model. Each year links to its own page with the full fault breakdown.

Compare the 2005 BMW 523 with another year

The raw pass rate mostly measures age. The year comparison adds the like-for-like figure, the mileage bands and the repair bill.

Compare 2005 with another year →

Compare two different cars instead →

Other 2005 cars with a similar record

Closest pass rates among 2005 cars with at least 2,000 tests, so a small sample cannot flatter itself into the list. See the full rankings: best and worst MOT pass rates.

The full DVSA record for the 2005 BMW 523 10 failure items · 6 advisories · 10 inspection categories · mileage brackets · all of it in the page, none of it above the fold

Every inspection category

Shares of the 1,694 individual items recorded on this vehicle, and the same share across all cars nationally. A single test can record several items, so a row is not a percentage of tests.

Category Items This car Nationally Difference
Brakes 395 22.80% 20.89% +1.91
Suspension 336 19.40% 20.98% −1.58
Lamps, reflectors and electrical equipment 285 16.40% 12.21% +4.19
Tyres 223 12.90% 19.76% −6.86
Noise, emissions and leaks 196 11.30% 5.52% +5.78
Non-component advisories 78 4.50% 4.18% +0.32
Visibility 69 4.00% 4.97% −0.97
Seat belts and supplementary restraint systems 50 2.90% 0.82% +2.08
Steering 32 1.80% 2.57% −0.77
Identification of the vehicle 30 1.70% 1.76% −0.06

The exact failure items, in the tester's words

Share of the 771 tests on this vehicle that recorded each item
Recorded item Severity Tests Est. cost Part
Srs malfunction indicator lamp warning lamp indicates a fault Seat belts and supplementary restraint systems Major 4.5% £3–12 Indicator Bulb →
Headlamp lens slightly defective Lamps, reflectors and electrical equipment Minor 4.2% £5–25 Headlight Bulb →
Ball joint dust cover severely deteriorated Suspension Minor 3.2% £18–45 Ball Joint →
Registration plate lamp(s) inoperative in the case of multiple lamps or light sources Lamps, reflectors and electrical equipment Minor 2.6% £5–20 Number Plate Lamp →
Coil spring fractured or broken Suspension Major 2.5% £25–65 Coil Spring →
Linkage ball joint dust cover ball joint dust cover no longer prevents the ingress of dirt Suspension Major 2.3% £18–45 Ball Joint →
Position lamp with a multiple light source up to 1/2 not functioning Lamps, reflectors and electrical equipment Minor 2.3% £5–25 Headlight Bulb →
Headlamp aim projected beam image is obviously incorrect Lamps, reflectors and electrical equipment Major 2.2% £30–80 Headlight Alignment →
Malfunction indicator lamp inoperative or indicates a malfunction Noise, emissions and leaks Major 2.2% £3–12 Indicator Bulb →
Rbt (sp) efficiency below requirements Brakes Major 2.2% £45–110 Brake Discs and Pads Set →

Severity is as recorded: Major and Dangerous fail the test outright; Minor and Advisory do not. Costs are estimates from typical UK parts prices — see how they are built.

What testers noted without failing the car

Advisories are the early warnings — the same parts a year or two before they fail. Reading them is how you tell a car that has been maintained from one that has been patched.

Items recorded as advisory on this vehicle
Recorded item Severity Tests Est. cost
Engine oil leaks leaking excessively from engine Noise, emissions and leaks Advisory 18.8% £200–700
Tread depth below requirements of 1.6mm Tyres Advisory 17.3% £45–95
Rigid brake pipes excessively corroded Brakes Advisory 13.9% £80–180
Pins and bushes pin or bush excessively worn Suspension Advisory 13.2% £40–150
Brake discs in such a condition that it is seriously weakened Brakes Advisory 9.3% £45–110
Headlamp has a product on the lens so that the light output is severely reduced Lamps, reflectors and electrical equipment Advisory 7.1% £5–25

Pass rate by mileage

Mileage Tests Pass rate Median odometer
0-30k 1 100.0% 20,514 mi
30-60k 41 82.9% 53,640 mi
60-90k 112 75.9% 77,194 mi
90-120k 272 75.4% 107,331 mi
120k+ 345 77.7% 151,639 mi

Source: 771 recorded tests on this vehicle-year. Every row above is recomputed from the same DVSA extract as the rest of the page — see the methodology.

2005 523 MOT questions

What is the MOT pass rate for a 2005 BMW 523?

76.9% of the 771 2005 BMW 523 tests in this dataset passed, against a national average of 72.4% for cars first used in 2005. First-attempt pass rate: 71.3%.

What are the most common MOT failures on a 2005 BMW 523?

The three most recorded items are srs malfunction indicator lamp warning lamp indicates a fault (4.54%), headlamp lens slightly defective (4.15%), ball joint dust cover severely deteriorated (3.24%). Percentages are the share of tests on this vehicle that recorded the item.

Does mileage affect the 2005 BMW 523 MOT pass rate?

Yes. Cars under 30,000 miles passed 100.0% of the time, falling to 77.7% for those over 120,000 miles. The median 2005 BMW 523 in this dataset had covered 116,296 mi.

Which fuel type is most reliable for a 2005 BMW 523?

Petrol: 76.8% pass rate across 759 tests. Diesel: 83.3% pass rate across 12 tests. Shares are of the tests on this vehicle that recorded each fuel type.

Does the season affect the 2005 BMW 523 MOT pass rate?

Tests recorded in the winter months (October–March) passed 75.7% of the time; summer months (April–September) passed 78.5%. Brakes, tyres and lights are tested harder in bad weather, but the difference is small on most models.