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B21 UNS

2006 BMW 550

Black Petrol 4395cc
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MOT Status

Valid
Expires13 Feb 2027
Tests26 (18 pass, 8 fail)
Pass rate69.2%

Mileage

158,741 mi
Last recorded158,741 miles
Recorded on10 Feb 2026
Typical for 2006 BMW 55085,166 mi

Significantly above average — investigate

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

RegistrationB21 UNS
MakeBMW
Model550
Year2006
ColourBlack
Fuel typePetrol
Engine4,395cc

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

18 pass 8 fail
Pass 10 Feb 2026 158,741 miles
Fail 6 Feb 2026 158,724 miles

Front Horn not working (7.7 (a))

Offside Front Position lamp not working (4.2.1 (a) (ii))

Nearside Rear Tyre has a bulge, caused by separation or partial failure of its structure inner wall (5.2.3 (d) (ii)) DANGEROUS

Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Pass 14 Feb 2025 148,299 miles

Offside Track rod end ball joint has slight play (2.1.3 (b) (i))

Rear Sub-frame mountings (body) corroded

Fail 5 Feb 2025 148,294 miles

Nearside Rear Upper Suspension arm pin or bush excessively worn Front (5.3.4 (a) (i))

Nearside Rear Upper Suspension arm pin or bush excessively worn Rearmost (5.3.4 (a) (i))

Offside Track rod end ball joint has slight play (2.1.3 (b) (i))

Rear Sub-frame mountings (body) corroded

Pass 7 Feb 2024 139,112 miles

Nearside Front brake pad sensor wire loose (not connected)

Nearside Rear Exhaust shield loose

Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Rear Sub-frame mountings (body) corroded

Fail 7 Feb 2024 139,112 miles

Nearside Front brake pad sensor wire loose (not connected)

Nearside Headlamp aim too high (4.1.2 (a))

Nearside Rear Exhaust shield loose

Offside Headlamp aim too high (4.1.2 (a))

Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Rear Sub-frame mountings (body) corroded

Pass 10 Feb 2023 129,547 miles

Front Brake disc worn, pitted or scored, but not seriously weakened Both discs - replace when pads are next changed (1.1.14 (a) (ii))

Front Brakes imbalanced requirements only just met. It would appear that the braking system requires adjustment or repair. (1.2.1 (b) (i))

Rear Brake disc worn, pitted or scored, but not seriously weakened Both discs - replace when pads are next changed (1.1.14 (a) (ii))

Rear diff casing has heavy corrosion

Fail 8 Feb 2023 129,538 miles

Nearside Rear Tyre has ply or cords exposed Worn to cord on inner tread (5.2.3 (d) (ii)) DANGEROUS

Front Brake disc worn, pitted or scored, but not seriously weakened Both discs - replace when pads are next changed (1.1.14 (a) (ii))

Front Brakes imbalanced requirements only just met. It would appear that the braking system requires adjustment or repair. (1.2.1 (b) (i))

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

Offside Rear Tyre worn close to legal limit/worn on edge Cord almost visible on inner tread - MUST BE REPLACED ASAP (5.2.3 (e))

Rear Brake disc worn, pitted or scored, but not seriously weakened Both discs - replace when pads are next changed (1.1.14 (a) (ii))

Rear diff casing has heavy corrosion

Pass 8 Feb 2022 118,374 miles

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

Rear differential casing heavily corroded but not leaking at present

Pass 9 Feb 2021 110,450 miles

Nearside Rear Tyre wearing slightly on inner edge

Fail 4 Feb 2021 110,430 miles

Nearside Rear Service brake excessively binding Parking brake (1.2.1 (f))

Nearside Rear Tyre wearing slightly on inner edge

Pass 22 Jan 2020 102,353 miles
Pass 21 Jan 2019 97,269 miles
Pass 24 Jan 2018 89,338 miles
Pass 26 Jan 2017 83,151 miles

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

Nearside Rear 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)

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

Fail 24 Jan 2017 83,151 miles

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

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

Offside Rear Brake pipe leaking (3.6.A.1)

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

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

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

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

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

Pass 22 Jan 2016 77,235 miles

all brake discs are slightly corroded

Pass 23 Jan 2015 72,690 miles
Pass 24 Jan 2014 64,604 miles
Pass 25 Jan 2013 55,205 miles
Pass 20 Jan 2012 47,735 miles
Fail 20 Jan 2012 47,735 miles

Nearside Front Track rod end ball joint has excessive play (2.2.B.1f)

Pass 28 Jan 2011 38,083 miles
Pass 29 Jan 2010 29,531 miles

Nearside Front brake disc slightly scored (3.5.1h)

Nearside Rear brake disc slightly scored (3.5.1h)

Offside Front brake disc slightly scored (3.5.1h)

Offside Rear brake disc slightly scored (3.5.1h)

Pass 25 Feb 2009 22,071 miles
Fail 19 Feb 2009 22,071 miles

Front brake disc excessively pitted (3.5.1h)

Nearside Rear Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (4.1.D.1a)

Offside Rear Tyre has ply or cords exposed (4.1.D.1b) DANGEROUS

How Reliable is the BMW 550?

Based on 5,870 MOT tests across 446 vehicles.

80.6%
Pass Rate
5,487
Miles/Year
21
Year Lifespan
446
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 108
Tyre has a bulge, caused by separation or partial failure of its structure 79
Tyre has ply or cords exposed 78
Track rod end ball joint has excessive play 51
Tyre has a cut in excess of the requirements deep enough to reach the ply or cords 38
Full BMW 550 reliability report

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B21 UNS is a 2006 BMW 550 in Black with a 4,395cc petrol engine. This vehicle has been through 26 MOT tests with a personal pass rate of 69.2%.

Across all 2006 BMW 550 models, the average MOT pass rate is 78.6% with a typical mileage of 85,166 miles. This particular vehicle has a lower pass rate than the average for its year, which may indicate maintenance issues worth investigating.

The most common reason a BMW 550 fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 108 recorded failures. If you're considering buying B21 UNS, it's worth having these areas checked by a mechanic before committing.

The BMW 550 typically stays on UK roads for around 21 years. At 20 years old, this BMW 550 is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of B21 UNS?

You can check the full history of B21 UNS by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was B21 UNS registered?

B21 UNS is a 2006 BMW 550, first registered on 15 February 2006.

Is B21 UNS safe to buy?

The MOT history for B21 UNS shows 26 tests with a 69.2% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does B21 UNS 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 B21 UNS. 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.