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M20 ONV

2004 Mercedes-benz Sl

Black Petrol 3724cc
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MOT Status

Expired
Expires31 Jul 2026
Tests18 (13 pass, 5 fail)
Pass rate72.2%

Mileage

79,658 mi
Last recorded79,658 miles
Recorded on1 Aug 2025
Typical for 2004 Mercedes-benz Sl53,336 mi

Significantly above average — investigate

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

RegistrationM20 ONV
MakeMercedes-benz
ModelSl
Year2004
ColourBlack
Fuel typePetrol
Engine3,724cc

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

13 pass 5 fail
Pass 1 Aug 2025 79,658 miles

Full under tray fitted

Nearside Rear Rear fog lamp with a multiple light source up to 1/2 not functioning (4.5.1 (a) (i))

Offside Rear Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

Parking brake efficiency only just met. It would appear that the braking system requires adjustment or repair. (1.4.2 (a) (i))

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

Unable to see rear springs

Fail 25 Jul 2025 79,654 miles

Front Battery insecure and likely to cause a short circuit (4.13 (a) (ii))

Front Windscreen wiper does not clear the windscreen effectively Both (3.4 (b) (ii))

Nearside Front Coil spring fractured or broken (5.3.1 (b) (i))

Nearside Front Wheel bearing has excessive play (5.1.3 (a) (i))

Offside Front Wheel bearing has excessive play (5.1.3 (a) (i))

Offside Rear Hydraulic brake calliper inadequately mounted (1.1.16 (c) (i))

Rear Battery insecure and likely to cause a short circuit (4.13 (a) (ii))

Registration plate does not conform to the specified requirements (0.1 (d))

Nearside Rear Tyre tread depth below requirements of 1.6mm (5.2.3 (e)) DANGEROUS

Offside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e)) DANGEROUS

Offside Rear Tyre tread depth below requirements of 1.6mm (5.2.3 (e)) DANGEROUS

Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) DANGEROUS

Full under tray fitted

Nearside Rear Rear fog lamp with a multiple light source up to 1/2 not functioning (4.5.1 (a) (i))

Offside Rear Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

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

Unable to see rear springs

Pass 9 Aug 2018 78,567 miles

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

Pass 10 Aug 2017 75,428 miles

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

Pass 26 Jul 2016 67,057 miles
Pass 7 Aug 2015 59,927 miles

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

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

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

Pass 5 Aug 2014 48,067 miles

Nearside Front Lower Suspension arm has slight play in a pin/bush (2.4.G.2)

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

Offside Front Lower Suspension arm has slight play in a pin/bush (2.4.G.2)

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

Pass 9 Aug 2013 44,712 miles
Fail 7 Aug 2013 44,712 miles

Offside Front coil spring broken (2.4.C.1a)

Pass 19 Jul 2012 42,385 miles

Items removed from driver's view prior to test

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

Pass 8 Jul 2011 39,908 miles
Fail 8 Jul 2011 39,905 miles

Nearside Side repeater not working (1.4.A.2c)

Pass 29 Jun 2010 36,079 miles
Pass 13 Jul 2009 30,956 miles
Fail 9 Jul 2009 30,833 miles

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

Pass 24 Jun 2008 27,629 miles
Fail 24 Jun 2008 27,629 miles

Nearside Rear Registration plate lamp not working (1.1.5c)

Pass 27 Jun 2007 22,855 miles

front tyres = 2.0 mm.

long park brake travel

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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M20 ONV is a 2004 Mercedes-benz Sl in Black with a 3,724cc petrol engine. This vehicle has been through 18 MOT tests with a personal pass rate of 72.2%.

Across all 2004 Mercedes-benz Sl models, the average MOT pass rate is 84.8% with a typical mileage of 53,336 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 M20 ONV, 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 22 years old, this Mercedes-benz Sl is well into its expected lifespan but still has years ahead.

Frequently Asked Questions

How do I check the history of M20 ONV?

You can check the full history of M20 ONV by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was M20 ONV registered?

M20 ONV is a 2004 Mercedes-benz Sl, first registered on 9 July 2004.

Is M20 ONV safe to buy?

The MOT history for M20 ONV shows 18 tests with a 72.2% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does M20 ONV 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 M20 ONV. 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.