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ALG 123J

1971 Mercedes-benz S-class

Silver Petrol 3499cc
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MOT Status

Valid
Expires3 Dec 2026
Tests9 (9 pass, 0 fail)
Pass rate100%

Mileage

29,403 mi
Last recorded29,403 miles
Recorded on4 Dec 2025
Typical for 1971 Mercedes-benz S-class45,595 mi

Below or average mileage for this year

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

RegistrationALG 123J
MakeMercedes-benz
ModelS-class
Year1971
ColourSilver
Fuel typePetrol
Engine3,499cc

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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

9 pass
Pass 4 Dec 2025 29,403 miles
Pass 3 Dec 2020 27,630 miles
Pass 10 May 2018 26,259 miles
Pass 12 May 2017 26,217 miles
Pass 29 Apr 2016 26,198 miles
Pass 14 May 2015 26,171 miles
Pass 13 May 2014 26,156 miles
Pass 8 May 2013 26,144 miles
Pass 2 Apr 2012 26,136 miles

How Reliable is the Mercedes-benz S-class?

Based on 692,220 MOT tests across 62,130 vehicles.

80.6%
Pass Rate
6,086
Miles/Year
39
Year Lifespan
62,130
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 25,613
Brake pipe excessively corroded 8,895
Parking brake: efficiency below requirements 6,706
Suspension arm has excessive play in a ball joint 6,018
Windscreen wiper does not clear the windscreen effectively 5,811
Full Mercedes-benz S-class reliability report

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ALG 123J is a 1971 Mercedes-benz S-class in Silver with a 3,499cc petrol engine. This vehicle has been through 9 MOT tests with a personal pass rate of 100%.

Across all 1971 Mercedes-benz S-class models, the average MOT pass rate is 73.5% with a typical mileage of 45,595 miles. This particular vehicle has performed better than the average for its year.

The most common reason a Mercedes-benz S-class fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 25,613 recorded failures. If you're considering buying ALG 123J, it's worth having these areas checked by a mechanic before committing.

The Mercedes-benz S-class typically stays on UK roads for around 39 years. At 55 years old, this Mercedes-benz S-class is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of ALG 123J?

You can check the full history of ALG 123J by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was ALG 123J registered?

ALG 123J is a 1971 Mercedes-benz S-class, first registered on 26 April 1971.

Is ALG 123J safe to buy?

The MOT history for ALG 123J shows 9 tests with a 100% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does ALG 123J 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 ALG 123J. 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.