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B23 ONN

2004 BMW 520

Red Petrol 1598cc
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MOT Status

Valid
Expires24 Nov 2026
Tests63 (55 pass, 8 fail)
Pass rate87.3%

Mileage

201,229 mi
Last recorded201,229 miles
Recorded on6 Nov 2025
Typical for 2004 BMW 52084,715 mi

Significantly above average — investigate

4 checks still locked for this BMW
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Finance
Write-off
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Vehicle Details

RegistrationB23 ONN
MakeBMW
Model520
Year2004
ColourRed
Fuel typePetrol
Engine1,598cc

All premium checks include

50+ data points
Finance Check (Experian) Insurance Write-off Salvage Auction Stolen Check Previous Owners Ex-Taxi, Police, NHS Mileage Anomaly Import / Export Scrapped Check Plate Changes

MOT History

55 pass 8 fail
Pass 6 Nov 2025 201,229 miles
Pass 13 Oct 2025 99,235 miles

Brake pipe corroded, covered in grease or other material All pipes (1.1.11 (c))

Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Nearside Rear Service brake binding but not excessively (1.2.1 (f))

Underside undersealed

Pass 19 Sep 2025 157,456 miles
Pass 27 Jun 2025 116,199 miles
Pass 25 Nov 2024 186,424 miles

Nearside Front Anti-roll bar linkage ball joint dust cover severely deteriorated (5.3.4 (b) (i))

Nearside Rear Lower Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Offside Front Anti-roll bar linkage ball joint dust cover severely deteriorated (5.3.4 (b) (i))

Offside Headlamp lens slightly defective (4.1.1 (b) (i))

Offside Rear Lower Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Pass 8 Oct 2024 97,736 miles
Fail 4 Oct 2024 97,736 miles

Offside Rear Parking brake inoperative on one side (1.4.1 (a))

Parking brake efficiency below requirements (1.4.2 (a) (i))

Pass 13 Sep 2024 142,025 miles
Pass 19 Jun 2024 110,472 miles
Pass 15 Sep 2023 122,093 miles
Pass 15 Aug 2023 96,168 miles
Pass 2 Aug 2023 166,540 miles

Nearside Front Coil spring worn Spring weak ride height low (5.3.1 (b) (i))

Nearside Front Lower Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Nearside Front Shock absorbers has light misting of oil (5.3.2 (b))

Nearside Rear Lower Suspension arm pin or bush worn but not resulting in excessive movement Suspension arms starting to crack (5.3.4 (a) (i))

Offside Front Coil spring corroded Weak ride height low (5.3.1 (b) (i))

Offside Front Lower Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Offside Rear Lower Suspension arm pin or bush worn but not resulting in excessive movement Suspension arm bushes starting to crack (5.3.4 (a) (i))

Pass 8 Jul 2023 100,746 miles

Rear Registration plate deteriorated but not likely to be misread (0.1 (b))

Pass 17 Sep 2022 100,375 miles
Pass 19 Aug 2022 162,789 miles
Fail 19 Aug 2022 162,788 miles

Nearside Rear Road wheel fractured (5.2.2 (a)) DANGEROUS

Pass 3 Aug 2022 93,284 miles
Pass 8 Jul 2022 81,276 miles

Nearside Front Upper Windscreen damaged but not adversely affecting driver's view crack (3.2 (a) (i))

Pass 17 Sep 2021 80,207 miles
Pass 1 Sep 2021 90,829 miles

Front Inner Suspension arm pin or bush worn but not resulting in excessive movement Both sides. (5.3.4 (a) (i))

Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Oil leak, but not excessive (8.4.1 (a) (i))

Pass 18 Aug 2021 160,821 miles

Nearside Front Shock absorbers light misting of oil or has limited damping effect (5.3.2 (b))

Pass 11 Jun 2021 68,621 miles
Fail 10 Jun 2021 68,621 miles

Nearside Rear Suspension bellows leaking (5.3.5 (c))

Pass 2 Oct 2020 88,242 miles
Pass 19 Sep 2020 61,542 miles

Nearside Rear Tyre worn close to legal limit/worn on edge 3.23mm (5.2.3 (e))

Pass 24 Aug 2020 155,103 miles
Pass 10 Jul 2020 63,641 miles

Engine cover

Pass 2 Oct 2019 84,645 miles

rear silencers corroded . slight leak

Pass 25 Sep 2019 46,916 miles
Pass 30 Aug 2019 58,398 miles

Engine cover fitted

Pass 29 Aug 2019 147,653 miles
Pass 15 Oct 2018 37,490 miles
Pass 1 Sep 2018 138,834 miles
Pass 17 Aug 2018 81,777 miles

Nearside Front Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Offside Rear Tyre has a cut but not deep enough to reach the ply or cords (5.2.3 (d) (i))

Pass 15 Aug 2018 46,171 miles
Pass 4 Apr 2018 40,674 miles
Pass 24 Oct 2017 27,402 miles
Pass 23 Aug 2017 130,180 miles

Nearside Front Tyre worn close to the legal limit inner edge (4.1.E.1)

Pass 5 Aug 2017 79,275 miles

Nearside Front Front suspension has slight play in a track control arm inner bush (2.5.B.2b)

Pass 10 Apr 2017 20,890 miles
Pass 22 Sep 2016 76,781 miles
Pass 22 Aug 2016 121,201 miles

Nearside Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)

Offside Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)

Pass 26 Sep 2015 76,075 miles

Offside Front Tyre worn close to the legal limit (4.1.E.1)

Windscreen has damage to an area less than a 40mm circle outside zone 'A' (8.3.1d)

Fail 25 Sep 2015 76,075 miles

Nearside Front Tyre tread depth below requirements of 1.6mm (4.1.E.1)

Offside Front Tyre worn close to the legal limit (4.1.E.1)

Windscreen has damage to an area less than a 40mm circle outside zone 'A' (8.3.1d)

Pass 5 Aug 2015 110,542 miles
Pass 16 Jun 2015 75,444 miles

both front tyres getting low on tread

Pass 28 Aug 2014 100,323 miles

Engine covers fitted obscuring some components in the engine bay

Front Brake pad(s) wearing thin (3.5.1g)

Under-trays fitted obscuring some underside components

Pass 14 Jun 2014 72,664 miles

Nearside Front Tyre worn close to the legal limit (4.1.E.1)

Offside Front Brake pipe slightly corroded (3.6.B.2c)

Pass 22 Aug 2013 89,404 miles

Offside Front Tyre worn close to the legal limit (4.1.E.1)

Fail 22 Aug 2013 89,404 miles

Nearside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1)

Offside Front Tyre worn close to the legal limit (4.1.E.1)

Offside Rear Tyre worn close to the legal limit (4.1.E.1)

Rear Brakes imbalanced requirements only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.5b)

Pass 17 Jun 2013 71,080 miles

Exhaust has a minor leak of exhaust gases (7.1.2)

Fail 17 Jun 2013 71,080 miles

Nearside Brake pipe excessively corroded (3.6.B.2c)

Nearside Rear Brake pipe excessively corroded (3.6.B.2c)

Offside Brake pipe excessively corroded (3.6.B.2c)

Exhaust has a minor leak of exhaust gases (7.1.2)

Nearside Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)

Offside Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)

Fail 22 May 2013 71,070 miles

Nearside Front Brake pipe excessively corroded (3.6.B.2c)

Nearside Front brake disc in such a condition that it is seriously weakened (3.5.1i)

Offside Front brake disc in such a condition that it is seriously weakened (3.5.1i)

Nearside Brake pipe excessively corroded (3.6.B.2c) DANGEROUS

Offside Brake pipe excessively corroded (3.6.B.2c) DANGEROUS

Oil leak

Pass 31 Aug 2012 75,305 miles

Nearside Front Tyre worn close to the legal limit (4.1.E.1)

Pass 23 May 2012 66,392 miles

Front Brake pipe slightly corroded (3.6.B.2c)

Nearside Front Brake pipe slightly corroded (3.6.B.2c)

Nearside Front Suspension arm rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)

Nearside Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)

Offside Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)

Pass 25 Aug 2011 63,899 miles
Pass 22 Mar 2011 62,115 miles
Pass 11 Aug 2010 35,201 miles

o/s/f tyre worn low on inner edge

Pass 9 Apr 2010 51,986 miles

Brake pipe slightly corroded (3.6.B.2c)

Exhaust has part of the system slightly deteriorated (7.1.1a)

Pass 25 Mar 2009 27,790 miles

Offside Front Tyre worn close to the legal limit (4.1.E.1)

Offside Rear Tyre worn close to the legal limit (4.1.E.1)

Fail 24 Mar 2009 27,790 miles

Nearside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1) DANGEROUS

Offside Front Tyre worn close to the legal limit (4.1.E.1)

Offside Rear Tyre worn close to the legal limit (4.1.E.1)

Pass 7 Mar 2008 22,355 miles
Pass 1 Mar 2007 17,296 miles

How Reliable is the BMW 520?

Based on 1,661,806 MOT tests across 152,584 vehicles.

78.5%
Pass Rate
7,968
Miles/Year
35
Year Lifespan
152,584
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 47,121
Parking brake: efficiency below requirements 22,647
Brake pipe excessively corroded 16,724
Tyre has ply or cords exposed 15,884
Track rod end ball joint has excessive play 14,720
Full BMW 520 reliability report

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B23 ONN is a 2004 BMW 520 in Red with a 1,598cc petrol engine. This vehicle has been through 63 MOT tests with a personal pass rate of 87.3%.

Across all 2004 BMW 520 models, the average MOT pass rate is 75.8% with a typical mileage of 84,715 miles. This particular vehicle has performed better than the average for its year.

The most common reason a BMW 520 fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 47,121 recorded failures. If you're considering buying B23 ONN, it's worth having these areas checked by a mechanic before committing.

The BMW 520 typically stays on UK roads for around 35 years. At 22 years old, this BMW 520 is well into its expected lifespan but still has years ahead.

Frequently Asked Questions

How do I check the history of B23 ONN?

You can check the full history of B23 ONN by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was B23 ONN registered?

B23 ONN is a 2004 BMW 520, first registered on 10 March 2004.

Is B23 ONN safe to buy?

The MOT history for B23 ONN shows 63 tests with a 87.3% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does B23 ONN have outstanding finance?

Finance checks require a premium vehicle report. This checks against all major UK finance providers to see if there is any outstanding finance on B23 ONN. If you buy a car with outstanding finance, the finance company can repossess it.

No warranty or guarantee of accuracy is provided for any free data on this page. The data guarantee applies only to information obtained through the purchase of a full check.