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J646 DHM

1992 Mercedes-benz 420

Black Petrol 4196cc
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MOT Status

Valid
Expires31 Aug 2026
Tests26 (18 pass, 8 fail)
Pass rate69.2%

Mileage

106,518 mi
Last recorded106,518 miles
Recorded on13 Aug 2025
Typical for 1992 Mercedes-benz 420117,497 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

RegistrationJ646 DHM
MakeMercedes-benz
Model420
Year1992
ColourBlack
Fuel typePetrol
Engine4,196cc

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 13 Aug 2025 106,518 miles

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

Pass 23 Aug 2024 105,023 miles

Engine oil level low.

Lower Exhaust pipe has a corrosion.

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

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

Nearside Front Shock absorbers has slight external damage to the casing Shock absorber has corrosion. (5.3.2 (b))

Nearside Power steering pipe/hose has slight seepage (2.1.5 (a))

Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

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

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

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

Offside Front Shock absorbers has slight external damage to the casing Shock absorber has corrosion. (5.3.2 (b))

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

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

Rear Fuel Pipe/s corroded ()

Fail 23 Aug 2024 105,023 miles

Engine oil level low.

Lower Exhaust pipe has a corrosion.

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

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

Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii))

Nearside Front Shock absorbers has slight external damage to the casing Shock absorber has corrosion. (5.3.2 (b))

Nearside Power steering pipe/hose has slight seepage (2.1.5 (a))

Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

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

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

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

Offside Front Shock absorbers has slight external damage to the casing Shock absorber has corrosion. (5.3.2 (b))

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

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

Rear Fuel Pipe/s corroded ()

Pass 9 Aug 2023 104,585 miles

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

Nearside Front Upper Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))

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

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

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

Power steering pipe/hose has slight seepage (2.1.5 (a))

Fail 9 Aug 2023 104,585 miles

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

Nearside Front Upper Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))

Nearside Headlamp aim too low (4.1.2 (a))

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

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

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

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

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

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

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

Power steering pipe/hose has slight seepage (2.1.5 (a))

Pass 1 Sep 2022 104,220 miles

Nearside Front Prop shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

Nearside Front Sub-frame pin or bush worn but not resulting in excessive movement perished (5.3.4 (a) (i))

Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Nearside Rear Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

Nearside Rear Sub-frame pin or bush worn but not resulting in excessive movement Perished (5.3.4 (a) (i))

Nearside Track rod end ball joint dust cover damaged or deteriorated, but preventing the ingress of dirt Perished (2.1.3 (g) (i))

Offside Front Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

Offside Front Sub-frame pin or bush worn but not resulting in excessive movement Pershed (5.3.4 (a) (i))

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

Offside Rear Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

Offside Rear Sub-frame pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Offside Track rod end ball joint dust cover damaged or deteriorated, but preventing the ingress of dirt Pershed (2.1.3 (g) (i))

Pass 19 Aug 2021 103,520 miles
Pass 11 Sep 2020 101,289 miles

Minor oil leak from steering pump or hose

Nearside Front Brake hose has slight corrosion to ferrule (1.1.12 (f) (i))

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

Nearside Rear Brake hose has slight corrosion to ferrule (1.1.12 (f) (i))

Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Nearside Rear Inner Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

Nearside Rear Outer Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

Offside Front Brake hose has slight corrosion to ferrule (1.1.12 (f) (i))

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

Offside Rear Brake hose has slight corrosion to ferrule (1.1.12 (f) (i))

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

Offside Rear Inner Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

Offside Rear Outer Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

Pass 12 Sep 2019 100,195 miles

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

Nearside Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))

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

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

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

Fail 11 Sep 2019 100,195 miles

Offside Front Windscreen washer jets misaligned and not providing sufficient fluid to the windscreen (3.5 (a))

Parking brake efficiency below requirements (1.4.2 (a) (i))

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

Nearside Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))

Nearside Rear Parking brake low.

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

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

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

Parking brake lever has excessive movement., need some adjustment.

Pass 28 Sep 2018 98,380 miles

Nearside Rear Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

Rear brake pads are 70% worn

Rear brake pipes are slightly corroded

Fail 28 Sep 2018 98,380 miles

Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii))

Nearside Rear Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

Nearside Windscreen wiper blade missing (3.4 (b) (ii))

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

Rear brake pads are 70% worn

Rear brake pipes are slightly corroded

Pass 29 Sep 2017 86,155 miles

Minor oil leak from steering box

Pass 14 Sep 2016 93,278 miles

Coolant leak from radiator

Oil leak

Oil level is slightly low

Steering box has a slight oil leak (2.2.D.2e)

Fail 14 Sep 2016 93,278 miles

Coolant leak from radiator

Nearside Headlamp aim too low (1.8)

Offside Headlamp aim too low (1.8)

Oil leak

Oil level is slightly low

Steering box has a slight oil leak (2.2.D.2e)

Pass 21 Sep 2015 92,116 miles
Fail 21 Sep 2015 92,116 miles

Exhaust emits dense blue smoke at idle (7.3.A.2b)

Pass 19 Dec 2013 91,621 miles

Oil leak

Steering box has a slight oil leak (2.2.D.2e)

Pass 6 Dec 2012 89,587 miles

Exhaust has a minor leak of exhaust gases (7.1.2)

Nearside Rear Drive shaft which forms part of the suspension coupling gaiter deteriorated, but preventing the ingress of dirt (2.4.G.4e)

Offside Rear Drive shaft which forms part of the suspension coupling gaiter deteriorated, but preventing the ingress of dirt (2.4.G.4e)

Oil leak

Power steering pipe(s) or hose(s) has slight seepage (2.3.3b)

Steering box has a slight oil leak (2.2.D.2e)

Fail 6 Dec 2012 89,586 miles

Nearside Front Passenger's seat cannot be secured in the upright position. (6.2.A.2)

Nearside Front Tyre not fitted in accordance with side wall instructions (4.1.D.1f)

Exhaust has a minor leak of exhaust gases (7.1.2)

Nearside Rear Drive shaft which forms part of the suspension coupling gaiter deteriorated, but preventing the ingress of dirt (2.4.G.4e)

Offside Rear Drive shaft which forms part of the suspension coupling gaiter deteriorated, but preventing the ingress of dirt (2.4.G.4e)

Oil leak

Power steering pipe(s) or hose(s) has slight seepage (2.3.3b)

Steering box has a slight oil leak (2.2.D.2e)

Pass 20 Dec 2010 83,618 miles

Nearside Front suspension has slight play in a lower suspension ball joint (2.5.B.1a)

Offside Front suspension has slight play in a lower suspension ball joint (2.5.B.1a)

Pass 14 Dec 2009 79,126 miles

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

Nearside Front wheel bearing has slight play (2.5.A.3c)

Pass 11 Dec 2008 74,400 miles
Pass 3 Jan 2008 70,133 miles
Fail 20 Dec 2007 70,059 miles

Nearside Rear Lower Suspension arm corroded and seriously weakened (2.4.G.1)

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

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

Pass 19 Dec 2006 64,367 miles

Nearside Front 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)

How Reliable is the Mercedes-benz 420?

Based on 24,311 MOT tests across 2,343 vehicles.

75.7%
Pass Rate
809
Miles/Year
40
Year Lifespan
2,343
On UK Roads

Top MOT Failure Points

Suspension component mounting prescribed area is excessively corroded 647
Brake pipe excessively corroded 577
Tyre tread depth below requirements of 1.6mm 565
brake binding 530
Windscreen wiper does not clear the windscreen effectively 479
Full Mercedes-benz 420 reliability report

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J646 DHM is a 1992 Mercedes-benz 420 in Black with a 4,196cc petrol engine. This vehicle has been through 26 MOT tests with a personal pass rate of 69.2%.

Across all 1992 Mercedes-benz 420 models, the average MOT pass rate is 77.3% with a typical mileage of 117,497 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 420 fails its MOT is suspension component mounting prescribed area is excessively corroded, accounting for 647 recorded failures. If you're considering buying J646 DHM, it's worth having these areas checked by a mechanic before committing.

The Mercedes-benz 420 typically stays on UK roads for around 40 years. At 34 years old, this Mercedes-benz 420 is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of J646 DHM?

You can check the full history of J646 DHM by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was J646 DHM registered?

J646 DHM is a 1992 Mercedes-benz 420, first registered on 7 February 1992.

Is J646 DHM safe to buy?

The MOT history for J646 DHM 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 J646 DHM 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 J646 DHM. 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.