Should I check the MOT history before buying a 2012 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 2012 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 2012 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.

How many 2012 Mercedes Benz Sl vehicles have had dangerous defects recorded?

33% of these vehicles have had a dangerous defect recorded. Search the registration on CarHunch — the full MOT history will show exactly what was flagged and whether it was resolved.

Is the 2012 Mercedes Benz Sl reliable?

Based on MOT data from 459 vehicles, the 2012 Mercedes Benz Sl has a first-time MOT pass rate of 88.6%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2012 Mercedes Benz Sl?

The most frequently recorded MOT issues on the 2012 Mercedes Benz Sl are: Offside Rear Tyre worn close to legal limit/worn on edge (25.1% of vehicles), Nearside Rear Tyre worn close to legal limit/worn on edge (24.4% of vehicles), Under-trays fitted obscuring some underside components (21.6% 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 2012 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 (2012)

459 real MOT outcomes analysed • 88.6% first-time pass rate

2012 Mercedes Benz Sl

CarHunch analysed 459 real MOT records for the 2012 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. 459 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.

The 2012 Mercedes-Benz SL passes its MOT on the first attempt 88.6% of the time, which is a solid 8.6 percentage points above the UK average—a genuine strength. However, nearly a third of these cars (32.7%) have recorded a dangerous defect at some point, which is a serious concern for a used buyer and suggests close pre-purchase inspection is essential.

These SLs are running relatively light at a median of 33,261 miles, yet they still rack up an average of 7.5 advisories per test, indicating wear and aging issues are catching up with the model despite moderate mileage. Before committing, have a pre-purchase inspection focus on the areas flagged most often in MOT records, and budget for those recurring advisory items as preventive maintenance.

The 2012 Mercedes Benz Sl has a decent first-time pass rate (88.6%), but a higher-than-average share of vehicles have had serious defects recorded — the individual vehicle's history matters a lot here.

⚠️ 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

88.6%

UK average ~80%

Better than average

Dangerous (ever)

32.7%

At least once in MOT history

Check this vehicle

Avg failures / car

1.45

Over 11.4 tests on record

High

Typical mileage

33k

Middle half: 23k–44k

For context

✅ Good baseline reliability. A 88.6% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.

🔧 Expect consumable spend. An average of 7.5 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 459 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.

Watch for defects — worth knowing

What tends to go wrong

Across 459 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 25.1%

Offside Rear Tyre worn close to legal limit/worn on edge · Nearside Rear Tyre worn close to legal limit/worn on edge · Nearside Front Tyre worn close to legal limit/worn on edge · …

Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.

Other issues 21.6%

Under-trays fitted obscuring some underside components · Engine covers fitted obscuring some components in the engine bay

Brake wear 21.4%

Offside Front Brake pipe corroded, covered in grease or other material · Nearside Front Brake pipe corroded, covered in grease or other material · Front Brake pad(s) wearing thin · …

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

Data covers a 3-year window centred on 2012.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 459 Mercedes Benz Sl cars.

Before you buy a 2012 Mercedes Benz Sl

Based on MOT data from 459 vehicles — here's what to check.

📋 Check the full MOT history. 32.7% 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%)	457	88.7%	1.44

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 2012 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.

33,261

typical

23,008

low mileage

44,473

high mileage

Half of all 2012 Mercedes Benz Sl vehicles fall between 23,008 and 44,473 miles.

Is the mileage you're seeing normal?

✓ Under 23,008 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.

✓ 23,008–44,473 miles — normal for age. This is where most 2012 Mercedes Benz Sls sit.

⚠ Over 60,038 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2012 Mercedes Benz Sl — Still on the Road

Almost all 2012 Mercedes Benz Sls are still on the road.

Strong survival — 389 vehicles still getting MOTs in 2025, 92% of the peak.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2015–2025.
* 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

11.4

Avg MOT tests per vehicle

1.45

Avg failures per vehicle

7.5

Avg advisories per vehicle

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Watch for defects — worth knowing