Mercedes Benz

Mercedes Benz Sl (1992)

407 real MOT outcomes analysed • 79.9% first-time pass rate

1992 Mercedes Benz Sl

CarHunch analysed 407 real MOT records for the 1992 Mercedes Benz Sl. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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AI Analysis Reliability Overview Common Issues Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

Moderate sample. 407 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.

The 1992 Mercedes Benz Sl passes its MOT first time at roughly the UK average rate (79.9%) — solid but worth checking this vehicle's history carefully.

⚠️ Over 1 in 5 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.
First-time pass
79.9%
UK average ~80%
Around average
Dangerous (ever)
23.6%
At least once in MOT history
Check this vehicle
Avg failures / car
2.62
Over 12.8 tests on record
High
Typical mileage
89k
Middle half: 63k–114k
For context
🔧 Average reliability. Passes at roughly the UK rate — not a standout, not a problem vehicle. Individual history makes all the difference.
🔧 Expect consumable spend. An average of 14.6 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.
🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 407 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.

Average reliability — agree?

What tends to go wrong

Across 407 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Other issues 52.6%
Oil leak · Oil leak, but not excessive
Tyre wear 44.6%
Nearside Rear Tyre worn close to the legal limit · Offside Rear Tyre worn close to the legal limit · Nearside Front Tyre worn close to the legal limit · …
Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.
Brake wear 37.6%
Offside Rear Brake pipe slightly corroded · Nearside Rear Brake pipe slightly corroded · Offside Front Brake pipe slightly corroded · …
Ask the seller when brakes were last serviced. If they don't know, factor in the cost.
Suspension & steering 27.2%
Nearside Front wheel bearing has slight play · Offside Front wheel bearing has slight play
Harder to spot without a ramp — this is a good reason to book a pre-purchase inspection.
Lighting 21.1%
Exhaust has part of the system slightly deteriorated
Usually cheap to fix. Worth confirming all lights work before collecting.

Data covers a 3-year window centred on 1992.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 407 Mercedes Benz Sl cars.

UK

Before you buy a 1992 Mercedes Benz Sl

Based on MOT data from 407 vehicles — here's what to check.

  • 📋 Check the full MOT history. 23.6% of these vehicles have had a dangerous defect recorded - recurring advisories often signal problems years before they become failures.
    Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle.
  • 🔍 Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price. Inspection ClickMechanic
  • 📄 Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically. History carVertical Get 20% off via CarHunch

Pass Rate by Fuel Type

Fuel type Vehicles Pass rate Avg failures
Petrol (100%) 405 79.9% 2.63

Colour Breakdown

Based on 34,567 Mercedes Benz Sl vehicles registered in the UK — across all years. From DVLA registration records.

Silver 33.9%
11,735
Black 24.1%
8,343
Blue 17.8%
6,160
Red 8.5%
2,946
White 6.2%
2,160
Grey 3.7%
1,270
Green 3.5%
1,202
Gold 1%
341
Brown 0.4%
125
Cream 0.3%
106
Beige 0.3%
104
Yellow 0.2%
75

Mileage Distribution

Most 1992 Mercedes Benz Sl vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.

88,790
typical
63,169
low mileage
113,958
high mileage

Half of all 1992 Mercedes Benz Sl vehicles fall between 63,169 and 113,958 miles.

Is the mileage you're seeing normal?
Under 63,169 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.
63,169–113,958 miles — normal for age. This is where most 1992 Mercedes Benz Sls sit.
Over 153,843 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

1992 Mercedes Benz Sl — Still on the Road

Numbers are thinning — 51% of 1992 Mercedes Benz Sls are still active.

112 vehicles still getting MOTs in 2025 — 51% of the peak remain.

220 112 2014 2025

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.

MOT History Averages

12.8
Avg MOT tests per vehicle
2.62
Avg failures per vehicle
14.6
Avg advisories per vehicle
Other model years — Mercedes Benz Sl: All Sl years → Which year to buy? →
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Average reliability — agree?