Should I check the MOT history before buying a 1988 Mercedes Benz Sl?

Yes. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. A full MOT history analysis will highlight patterns that a single test result won't reveal.

What corrosion should I look for when inspecting a 1988 Mercedes Benz Sl?

Check brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that is expensive to fix and can fail an MOT.

How are tyres and brakes typically on a 1988 Mercedes Benz Sl?

Tyres and brakes are the most common advisory items on vehicles of this age. Budget for replacement if they are near the limit, and factor this into your offer price.

Is the 1988 Mercedes Benz Sl reliable?

Based on MOT data from 248 vehicles, the 1988 Mercedes Benz Sl has a first-time MOT pass rate of 81.2%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 1988 Mercedes Benz Sl?

The most frequently recorded MOT issues on the 1988 Mercedes Benz Sl are: Oil leak (42.5% of vehicles), Oil leak, but not excessive (41.8% of vehicles), Offside Rear Tyre worn close to the legal limit (27.5% of vehicles). These figures are based on actual MOT test records — search a specific registration on CarHunch to see its individual history.

Do I need an HPI check when buying a 1988 Mercedes Benz Sl?

Yes. The MOT history will not show outstanding finance, insurance write-offs, or stolen status. An HPI check covers these areas and should be part of any used car purchase.

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Mercedes Benz Sl (1988)

248 real MOT outcomes analysed • 81.2% first-time pass rate

1988 Mercedes Benz Sl

CarHunch analysed 248 real MOT records for the 1988 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

This 1988 Mercedes-Benz SL passes MOT at 81.2%, marginally above the UK average of 80%, so reliability is broadly in line with expectations for a car of this age. The 15.7% of cars that have suffered a dangerous defect is notably elevated and worth taking seriously when inspecting a used example.

At an average mileage of 81,771 miles, these SLs are relatively low-mileage survivors, suggesting careful ownership—though the average of 2.94 failures per test indicates mechanical wear does accumulate. With 12.5 advisories per vehicle on average, expect to budget for incremental repairs; before purchase, have a pre-buy inspection focus on the suspension, cooling system, and electrical gremlins that older Mercedes typically develop.

We have limited data for the 1988 Mercedes Benz Sl — treat the figures below as indicative rather than definitive.

⚠️ Around 1 in 8 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

81.2%

UK average ~80%

Around average

Dangerous (ever)

15.7%

At least once in MOT history

Check this vehicle

Avg failures / car

2.94

Over 15.4 tests on record

High

Typical mileage

77k

Middle half: 56k–103k

For context

These stats describe 248 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 248 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Other issues 42.5%

Oil leak · Oil leak, but not excessive · Fuel pipe/s corroded

Tyre wear 27.5%

Offside Rear Tyre worn close to the legal limit · Nearside Rear Tyre worn close to the legal limit · Offside 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.

Exhaust & emissions 25.6%

Exhaust emissions carbon monoxide content excessive · Exhaust has a minor leak of exhaust gases

Brake wear 21.1%

Nearside Rear Brake pipe slightly corroded · Offside Rear Brake pipe slightly corroded · Anti-lock braking system warning lamp indicates an ABS fault

Ask the seller when brakes were last serviced. If they don't know, factor in the cost.

Suspension & steering 20%

Steering system has slight free play detected at steering wheel

Harder to spot without a ramp — this is a good reason to book a pre-purchase inspection.

Lighting 17.1%

Nearside Headlamp aim too low · Offside Headlamp aim too low

Usually cheap to fix. Worth confirming all lights work before collecting.

Wipers & washers 12.5%

Windscreen washer provides insufficient washer liquid

Data covers a 3-year window centred on 1988.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 248 Mercedes Benz Sl cars.

Before you buy a 1988 Mercedes Benz Sl

Based on MOT data from 248 vehicles — here's what to check.

📋 Check the full MOT history. 15.7% 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 →
📄 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 Get 20% off via CarHunch

Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Petrol (100%)	247	81.1%	2.95

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%

Mileage Distribution

Most 1988 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.

76,621

typical

56,489

low mileage

102,901

high mileage

Half of all 1988 Mercedes Benz Sl vehicles fall between 56,489 and 102,901 miles.

Is the mileage you're seeing normal?

✓ Under 56,489 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.

✓ 56,489–102,901 miles — normal for age. This is where most 1988 Mercedes Benz Sls sit.

⚠ Over 138,916 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

1988 Mercedes Benz Sl — Still on the Road

Most 1988 Mercedes Benz Sls are still being driven.

126 vehicles still getting MOTs in 2025 — 78% of the peak remain.

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

15.4

Avg MOT tests per vehicle

2.94

Avg failures per vehicle

12.5

Avg advisories per vehicle

Other model years — Mercedes Benz Sl: All Sl years → Which year to buy? →

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Average reliability — agree?