Should I check the MOT history before buying a 2004 Smart Forfour Passion Semi Auto?

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 2004 Smart Forfour Passion Semi Auto?

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 2004 Smart Forfour Passion Semi Auto?

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 2004 Smart Forfour Passion Semi Auto vehicles have had dangerous defects recorded?

28% 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 2004 Smart Forfour Passion Semi Auto reliable?

Based on MOT data from 120 vehicles, the 2004 Smart Forfour Passion Semi Auto has a first-time MOT pass rate of 74.3%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

Do I need an HPI check when buying a 2004 Smart Forfour Passion Semi Auto?

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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Smart Forfour Passion Semi Auto (2004)

120 real MOT outcomes analysed • 74.3% first-time pass rate

2004 Smart Forfour Passion Semi Auto

CarHunch analysed 120 real MOT records for the 2004 Smart Forfour Passion Semi Auto. 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 Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Compare Models

This 2004 Smart ForFour Passion is notably unreliable by MOT standards: a 70.6% first-time pass rate sits well below the UK average of 80%, and nearly three in ten vehicles have recorded a dangerous defect at some point. That's a serious concern if you're considering buying one — it suggests structural, braking, or steering problems aren't uncommon in this cohort.

At around 64,000 miles on average, these cars are reasonably well-used for their age, yet they're still accumulating 4.1 failures per test and 16 advisories, pointing to widespread wear and decay rather than freak problems. Before viewing one, get a full pre-purchase inspection focused on suspension, brakes, and electrics — the sheer volume of minor faults combined with the dangerous defect rate makes a professional check essential.

We have limited data for the 2004 Smart Forfour Passion Semi Auto — treat the figures below as indicative rather than definitive.

⚠️ 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

74.3%

UK average ~80%

Below average

Dangerous (ever)

28.3%

At least once in MOT history

Check this vehicle

Avg failures / car

4.13

Over 15.4 tests on record

High

Typical mileage

62k

Middle half: 49k–78k

For context

These stats describe 120 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.

Buyer beware — pass it on

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 120 Smart Forfour Passion Semi Auto cars.

Before you buy a 2004 Smart Forfour Passion Semi Auto

Based on MOT data from 120 vehicles — here's what to check.

📋 Check the full MOT history. 28.3% 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 (99%)	119	74.1%	4.17

Mileage Distribution

Most 2004 Smart Forfour Passion Semi Auto 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.

61,981

typical

48,682

low mileage

77,983

high mileage

Half of all 2004 Smart Forfour Passion Semi Auto vehicles fall between 48,682 and 77,983 miles.

Is the mileage you're seeing normal?

✓ Under 48,682 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.

✓ 48,682–77,983 miles — normal for age. This is where most 2004 Smart Forfour Passion Semi Autos sit.

⚠ Over 105,277 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2004 Smart Forfour Passion Semi Auto — Still on the Road

Numbers are thinning — 18% of 2004 Smart Forfour Passion Semi Autos are still active.

Numbers are declining — 17 vehicles still getting MOTs in 2025 (18% of peak).

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

4.13

Avg failures per vehicle

Avg advisories per vehicle

Other model years — Smart Forfour Passion Semi Auto: All Forfour Passion Semi Auto years → Which year to buy? →

2005 2006

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Buyer beware — pass it on