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M121 SLH

2004 Mercedes-benz C

Silver Petrol 1796cc
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MOT Status

Valid
Expires27 Jan 2027
Tests30 (19 pass, 11 fail)
Pass rate63.3%

Mileage

103,753 mi
Last recorded103,753 miles
Recorded on26 Jan 2026
Typical for 2004 Mercedes-benz C82,457 mi

Above average mileage for this year

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

RegistrationM121 SLH
MakeMercedes-benz
ModelC
Year2004
ColourSilver
Fuel typePetrol
Engine1,796cc

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 11 fail
Pass 26 Jan 2026 103,753 miles

Offside Rear Anti-roll bar pin or bush worn but not resulting in excessive movement bar bush worn (5.3.4 (a) (i))

Fail 22 Jan 2026 103,753 miles

Nearside Front Outer Track rod end ball joint has excessive play (2.1.3 (b) (i))

Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i))

Offside Front Outer Track rod end ball joint has excessive play (2.1.3 (b) (i))

Offside Rear Anti-roll bar pin or bush worn but not resulting in excessive movement bar bush worn (5.3.4 (a) (i))

Pass 14 Jan 2025 94,165 miles

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

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

Nearside Front headlamp unit loose

Offside Rear Anti-roll bar pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

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

Rear Anti-roll bar corroded but not seriously weakened (5.3.3 (b) (i))

under-trays fitted obscure full view of inspection

Pass 25 Jan 2024 83,355 miles

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

Offside Front Anti-roll bar pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Offside Front Inner Brake pad(s) wearing thin very low (1.1.13 (a) (ii))

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

Offside Front slight play track control arm

Rear Brake lining(s) wearing thin (1.1.13 (a) (ii))

condensation in exhaust

Pass 28 Jan 2023 69,885 miles

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

Offside Front Inner Anti-roll bar linkage pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Offside Front Play in steering rack inner joint(s)

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

Oil leak, but not excessive oil leak on gearbox (8.4.1 (a) (i))

Rear Coil spring corroded o/s n/s rear (5.3.1 (b) (i))

Wheel bearing has slight play o/s n/s front (5.1.3 (a) (i))

o/s/f seat belt webbing slightly frayed

rear suspension arm bushes worn due to age

Fail 24 Jan 2023 69,705 miles

Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c))

Nearside Front Inner Suspension arm ball joint excessively worn (5.3.4 (a) (i))

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

Nearside Rear All direction indicators incorrect colour (4.4.3 (a))

Tyre has a bulge, caused by separation or partial failure of its structure n/s/f and n/s/r (5.2.3 (d) (ii)) DANGEROUS

All direction indicators slightly discoloured o/s n/s front (4.4.3 (a))

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

Offside Front Play in steering rack inner joint(s)

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

Oil leak, but not excessive oil leak on gearbox (8.4.1 (a) (i))

Rear Coil spring corroded o/s n/s rear (5.3.1 (b) (i))

Wheel bearing has slight play o/s n/s front (5.1.3 (a) (i))

o/s/f seat belt webbing slightly frayed

rear suspension arm bushes worn due to age

Pass 28 Jan 2022 53,955 miles

General Corrosion Underbody And Suspension Components

Nearside Headlamp has a product on the lens but not seriously reducing light output (4.1.4 (b))

Offside Headlamp has a product on the lens but not seriously reducing light output (4.1.4 (b))

Sub-frame corroded but not seriously weakened Rear Subframe Corroded (5.3.3 (b) (i))

Undertrays Fitted Obstructing View For Inspection

Fail 17 Nov 2021 53,950 miles

Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii))

Rear All direction indicators incorrect colour (4.4.3 (a))

Nearside Rear Tyre tread pattern not visible over the whole tread area when minimum depth required is 1.0mm (5.2.3 (e)) DANGEROUS

Offside Rear Tyre tread pattern not visible over the whole tread area when minimum depth required is 1.0mm (5.2.3 (e)) DANGEROUS

Front Headlamp has a product on the lens but not seriously reducing light output both (4.1.4 (b))

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

rear axle corroded

under tray fitted

Pass 1 Jun 2020 46,416 miles

Nearside Front Headlamp has a product on the lens but not seriously reducing light output (4.1.4 (b))

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

Offside Front Headlamp has a product on the lens but not seriously reducing light output (4.1.4 (b))

Offside Rear Nail in tyre

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

Vehicles internal headlight adjuster altered to recheck lights

Pass 9 May 2019 30,986 miles

PARKING BRAKE IMBALANCE

Fail 4 May 2019 30,985 miles

Nearside Front Lower Suspension arm ball joint excessively worn REAR OF TWO (5.3.4 (a) (i))

Nearside Headlamp has a product on the lens so that the light output is severely reduced (4.1.4 (b))

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

Offside Headlamp has a product on the lens so that the light output is severely reduced (4.1.4 (b))

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

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

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

Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

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

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

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

Offside Rear Nail in tyre

PARKING BRAKE IMBALANCE

Pass 30 Apr 2018 22,020 miles
Fail 19 Apr 2018 22,018 miles

Rear Brake pad(s) less than 1.5 mm thick (3.5.1g)

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

Pass 30 May 2017 21,963 miles

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

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

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

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

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

Fail 26 May 2017 21,962 miles

Central Exhaust system not adequately supported (7.1.1)

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

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

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

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

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

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

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

Pass 18 May 2016 21,402 miles
Pass 18 May 2015 20,588 miles

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

Offside Front Suspension arm ball joint dust cover deteriorated, but preventing the ingress of dirt (2.4.G.2)

Fail 18 May 2015 20,586 miles

Nearside Front Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt (2.4.G.2)

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

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

Offside Front Suspension arm ball joint dust cover deteriorated, but preventing the ingress of dirt (2.4.G.2)

Pass 19 May 2014 19,443 miles
Pass 21 May 2013 18,281 miles
Fail 20 May 2013 18,279 miles

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

Nearside Windscreen wiper does not clear the windscreen effectively (8.2.2)

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

Offside Rear Coil spring not correctly located (2.4.C.2)

Pass 22 May 2012 16,762 miles

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

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

Fail 21 May 2012 16,757 miles

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

Nearside Headlamp aim beam image obviously incorrect (1.8.A.1b)

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

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

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

Offside Front Lower Suspension arm ball joint dust cover deteriorated, but preventing the ingress of dirt (2.4.G.2)

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

Pass 17 May 2011 15,231 miles
Pass 25 May 2010 13,580 miles
Fail 25 May 2010 13,577 miles

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

Nearside Windscreen wiper does not clear the windscreen effectively (8.2.2)

Pass 13 Jul 2009 11,932 miles

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

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

both rear and o/s/f tyre walls perished

Pass 19 Jun 2008 9,738 miles
Fail 17 Jun 2008 9,723 miles

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

Pass 29 May 2007 7,354 miles

Nearside Front brake disc slightly scored (3.5.1h)

Offside Front brake disc slightly scored (3.5.1h)

How Reliable is the Mercedes-benz C?

Based on 8,031,355 MOT tests across 683,668 vehicles.

77.6%
Pass Rate
6,412
Miles/Year
32
Year Lifespan
683,668
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 240,078
Suspension arm has excessive play in a ball joint 76,831
Track rod end ball joint has excessive play 67,503
Brake pipe excessively corroded 66,298
coil spring broken 61,560
Full Mercedes-benz C reliability report

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£30k guarantee Instant results Cancel anytime

M121 SLH is a 2004 Mercedes-benz C in Silver with a 1,796cc petrol engine. This vehicle has been through 30 MOT tests with a personal pass rate of 63.3%.

Across all 2004 Mercedes-benz C models, the average MOT pass rate is 72.2% with a typical mileage of 82,457 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 C fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 240,078 recorded failures. If you're considering buying M121 SLH, it's worth having these areas checked by a mechanic before committing.

The Mercedes-benz C typically stays on UK roads for around 32 years. At 22 years old, this Mercedes-benz C is well into its expected lifespan but still has years ahead.

Frequently Asked Questions

How do I check the history of M121 SLH?

You can check the full history of M121 SLH by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was M121 SLH registered?

M121 SLH is a 2004 Mercedes-benz C, first registered on 16 June 2004.

Is M121 SLH safe to buy?

The MOT history for M121 SLH shows 30 tests with a 63.3% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does M121 SLH 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 M121 SLH. 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.