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B122 UNA

1985 Mercedes-benz Sl

Red Petrol 3839cc
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MOT Status

Expired
Expires12 May 2026
Tests24 (19 pass, 5 fail)
Pass rate79.2%

Mileage

96,666 mi
Last recorded96,666 miles
Recorded on13 May 2025
Typical for 1985 Mercedes-benz Sl92,344 mi

Below or average mileage for this year

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

RegistrationB122 UNA
MakeMercedes-benz
ModelSl
Year1985
ColourRed
Fuel typePetrol
Engine3,839cc

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

19 pass 5 fail
Pass 13 May 2025 96,666 miles
Fail 9 Apr 2025 96,633 miles

Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))

Offside Front Fluid leak harmful to the environment or a risk to other road users (8.4.1 (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))

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

Rear Coil spring corroded both (5.3.1 (b) (i))

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

Pass 3 May 2024 96,243 miles

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

Pass 14 Apr 2023 95,045 miles

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

Offside Front Vehicle structure is corroded but structural rigidity is not significantly reduced chassis leg (6.1.1 (c) (i))

Offside Front Vehicle structure is corroded but structural rigidity is not significantly reduced under abs module (6.1.1 (c) (i))

Fail 14 Apr 2023 95,045 miles

Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))

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

Offside Front Vehicle structure is corroded but structural rigidity is not significantly reduced chassis leg (6.1.1 (c) (i))

Offside Front Vehicle structure is corroded but structural rigidity is not significantly reduced under abs module (6.1.1 (c) (i))

Pass 10 Jan 2022 94,090 miles
Pass 16 Nov 2020 93,205 miles
Pass 14 May 2019 91,244 miles
Pass 19 May 2018 89,811 miles

Vehicle structure has slight corrosion (6.1.A.1)

Fail 12 May 2018 89,798 miles

Nearside Front Suspension component mounting prescribed area is excessively corroded (2.4.A.3)

Vehicle structure has slight corrosion (6.1.A.1)

Pass 2 Jun 2017 88,574 miles
Fail 27 May 2017 88,574 miles

Offside rear brake binding (3.7.B.1)

Pass 16 May 2016 84,330 miles

BOTH FRONT TYRES PERISHING

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

Fail 12 May 2016 87,324 miles

Exhaust emissions carbon monoxide content excessive (7.3.B.1a)

Offside rear brake binding (3.7.B.1)

Windscreen washer provides insufficient washer liquid (8.2.3)

BOTH FRONT TYRES PERISHING

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

Pass 14 May 2015 86,690 miles

BOTH FRONT TYRES PERISHING (SIDEWALLS)

Battery loose

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

Minor chips to windscreen

Offside Front Suspension component mounting prescribed area is corroded but not considered excessive (2.4.A.3)

Pass 13 May 2014 85,614 miles

BOTH FRONT TYRES BADLY PERISHED

Nearside Front Brake hose has slight corrosion to ferrules (3.6.B.4e)

Nearside Rear Brake hose has slight corrosion to ferrules (3.6.B.4e)

Offside Front Brake hose has slight corrosion to ferrules (3.6.B.4e)

Offside Rear Brake hose has slight corrosion to ferrules (3.6.B.4e)

Rear silencer deteriorating

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

Pass 16 May 2013 84,341 miles

Both front tyres perishing (Sidewalls)

O/S/F Inner wing & chassis starting to corrode

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

Pass 23 May 2012 83,777 miles

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

Child seat fitted not allowing full inspection of adult belt

Front tyres sidewalls starting to perish

Fuel pipe/s corroded

Rear silencer deteriorating

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

Pass 12 May 2011 82,567 miles

Child seat fitted not allowing full inspection of adult belt

Oil leak

Vehicle structure has slight corrosion (6.1.A.1)

Pass 14 Jun 2010 81,454 miles

Nearside Rear Service brake: service brake efficiency only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.7)

rear brake hoses perished but no cords exposed

some play in steering idler

Pass 15 Jun 2009 81,452 miles

misting of oil to steering damper

rear brake hoses starting to perish

Pass 6 Jun 2008 80,955 miles
Pass 7 Jun 2007 80,681 miles
Pass 21 Jun 2006 80,494 miles

How Reliable is the Mercedes-benz Sl?

Based on 528,820 MOT tests across 35,553 vehicles.

83.4%
Pass Rate
2,023
Miles/Year
43
Year Lifespan
35,553
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 8,801
Tyre has ply or cords exposed 3,812
Brake pipe excessively corroded 3,463
Tyre has a cut in excess of the requirements deep enough to reach the ply or cords 3,077
Windscreen wiper does not clear the windscreen effectively 2,767
Full Mercedes-benz Sl reliability report

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B122 UNA is a 1985 Mercedes-benz Sl in Red with a 3,839cc petrol engine. This vehicle has been through 24 MOT tests with a personal pass rate of 79.2%.

Across all 1985 Mercedes-benz Sl models, the average MOT pass rate is 77.5% with a typical mileage of 92,344 miles. This particular vehicle has performed better than the average for its year.

The most common reason a Mercedes-benz Sl fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 8,801 recorded failures. If you're considering buying B122 UNA, it's worth having these areas checked by a mechanic before committing.

The Mercedes-benz Sl typically stays on UK roads for around 43 years. At 41 years old, this Mercedes-benz Sl is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of B122 UNA?

You can check the full history of B122 UNA by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was B122 UNA registered?

B122 UNA is a 1985 Mercedes-benz Sl, first registered on 8 February 1985.

Is B122 UNA safe to buy?

The MOT history for B122 UNA shows 24 tests with a 79.2% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does B122 UNA 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 B122 UNA. 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.