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B198 NSG

1985 Mercedes-benz Sl

Red Petrol 2746cc
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MOT Status

Valid
Expires2 Dec 2026
Tests29 (19 pass, 10 fail)
Pass rate65.5%

Mileage

144,939 mi
Last recorded144,939 miles
Recorded on3 Dec 2025
Typical for 1985 Mercedes-benz Sl92,344 mi

Significantly above average — investigate

4 checks still locked for this Mercedes-benz
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Vehicle Details

RegistrationB198 NSG
MakeMercedes-benz
ModelSl
Year1985
ColourRed
Fuel typePetrol
Engine2,746cc

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 10 fail
Pass 3 Dec 2025 144,939 miles

Nearside Rear Suspension component mounting prescribed area is corroded but not considered excessive subframe mount (5.3.6 (a) (i))

Fail 20 Nov 2025 144,938 miles

All direction indicators not working (4.4.1 (a) (ii))

Nearside Rear Suspension component mounting prescribed area is corroded but not considered excessive subframe mount (5.3.6 (a) (i))

Pass 19 Nov 2024 143,720 miles

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

Fail 19 Nov 2024 143,720 miles

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

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

Pass 16 Nov 2023 143,108 miles
Pass 16 Nov 2022 142,132 miles

Nearside Rear Suspension component mounting prescribed area is corroded but not considered excessive subframe mount (5.3.6 (a) (i))

Fail 16 Nov 2022 142,132 miles

Nearside Rear Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))

Nearside Rear Suspension component mounting prescribed area is corroded but not considered excessive subframe mount (5.3.6 (a) (i))

Pass 8 Nov 2021 141,359 miles
Pass 23 Nov 2020 140,751 miles

Nearside Rear Suspension arm corroded but not seriously weakened (5.3.3 (b) (i))

Nearside Rear Suspension component mounting prescribed area is corroded but not considered excessive (5.3.6 (a) (i))

Offside Rear Suspension arm corroded but not seriously weakened (5.3.3 (b) (i))

Offside Rear Suspension component mounting prescribed area is corroded but not considered excessive (5.3.6 (a) (i))

Pass 25 Jul 2019 140,392 miles

Front Registration plate insecure but not likely to fall off (0.1 (a))

Nearside Rear Wheel bearing has slight play (5.1.3 (a) (i))

Fail 25 Jul 2019 140,392 miles

Nearside Front Service brake excessively binding (1.2.1 (f))

Front Registration plate insecure but not likely to fall off (0.1 (a))

Nearside Rear Wheel bearing has slight play (5.1.3 (a) (i))

Pass 18 Jul 2018 140,086 miles
Fail 16 Jul 2018 140,086 miles

Front Exhaust has a major leak of exhaust gases (6.1.2 (a))

Front Windscreen washer provides insufficient washer liquid (3.5 (a))

Pass 10 Aug 2017 138,821 miles
Pass 18 Feb 2016 138,430 miles

Enigine has slight oil leak

Nearside Front Tyre showing signs of perishing

Offside Front Tyre showing signs of perishing

Pass 24 Feb 2015 138,173 miles
Fail 24 Feb 2015 138,173 miles

Nearside Rear Tyre has a tear, caused by separation or partial failure of its structure (4.1.D.1b) DANGEROUS

Offside Rear Tyre has a tear, caused by separation or partial failure of its structure (4.1.D.1b) DANGEROUS

Pass 17 Feb 2014 137,523 miles
Pass 11 Mar 2013 137,040 miles

Both rear trailing arms deteriorated

Engine oil leak

Final drive oil leak

Front subframe deteriorated

Nearside Front Sub-frame rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)

Nearside front chassis rail deteriorated

Nearside rear tyre perished on both sidewalls

Offside Front Sub-frame rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)

Offside front chassis rail deteriorated

Offside rear tyre perished on outer sidewall

Fail 7 Feb 2013 136,985 miles

Nearside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement (2.4.G.2)

Nearside Headlamp aim too high and too far to the left. (1.8)

Offside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement (2.4.G.2)

Offside Headlamp aim too high and too far to the right. (1.8)

All front suspension components deteriorated

Both rear trailing arms deteriorated

Engine oil leak

Final drive oil leak

Front subframe deteriorated

Nearside Front Sub-frame rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)

Nearside front chassis rail deteriorated

Nearside rear tyre perished on inner and outer sidewalls

Nearside rear tyre wearing on inner edge

Offside Front Sub-frame rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)

Offside front chassis rail deteriorated

Offside rear tyre perished on outer sidewall

Pass 30 Jan 2012 136,557 miles

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

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

Oil leak

o/s/r and n/s/r tyres has damage to sidewalls

Pass 28 Feb 2011 135,877 miles
Pass 17 Jun 2010 135,601 miles
Pass 17 Jul 2009 134,464 miles
Fail 16 Jul 2009 134,461 miles

Hazard warning lamps not flashing in phase, with ignition off (1.4.B.1f)

Hazard warning lamps not flashing in phase, with ignition on (1.4.B.1f)

Hazard warning tell tale not working correctly (1.4.B.1e)

Nearside Headlamp aim too low (1.8)

Nearside Windscreen wiper blade missing (8.2.2)

Offside Headlamp aim too high (1.8)

Offside Windscreen wiper blade missing (8.2.2)

Windscreen washer provides insufficient washer liquid (8.2.3)

Pass 13 Sep 2007 133,590 miles
Fail 3 Sep 2007 133,590 miles

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

Nearside Headlamp aim too high (1.8)

Nearside Rear Subframe mounting prescribed area is excessively corroded (2.4.A.3)

Offside Headlamp aim too low (1.8)

Pass 19 Aug 2006 131,525 miles
Fail 17 Jul 2006 131,525 miles

Exhaust system not adequately supported (7.1.1)

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

Offside Stop lamp not working (1.2.1b)

Offside rear parking brake recording little or no effort (3.7.B.6a)

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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B198 NSG is a 1985 Mercedes-benz Sl in Red with a 2,746cc petrol engine. This vehicle has been through 29 MOT tests with a personal pass rate of 65.5%.

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 a lower pass rate than the average for its year, which may indicate maintenance issues worth investigating.

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 B198 NSG, 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 B198 NSG?

You can check the full history of B198 NSG by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was B198 NSG registered?

B198 NSG is a 1985 Mercedes-benz Sl, first registered on 31 December 1985.

Is B198 NSG safe to buy?

The MOT history for B198 NSG shows 29 tests with a 65.5% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does B198 NSG 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 B198 NSG. 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.