Should I check the MOT history before buying a 2004 BMW K Series?

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 BMW K Series?

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 BMW K Series?

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 2004 BMW K Series reliable?

Based on MOT data from 474 vehicles, the 2004 BMW K Series has a first-time MOT pass rate of 92.9%, 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 BMW K Series?

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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BMW K Series (2004)

474 real MOT outcomes analysed • 92.9% first-time pass rate

2004 BMW K Series

CarHunch analysed 474 real MOT records for the 2004 BMW K Series. 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 Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

Moderate sample. 474 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.

The 2004 BMW K Series passes its MOT at 92.9%—well above the UK average of 80%—and dangerous defects show up in only 15% of vehicles, which is reassuringly low for a 20-year-old bike. This is a genuinely reliable machine by older motorcycle standards.

At a median of 22,826 miles, these machines have been used fairly gently, which explains both the strong pass rate and the modest 0.89 failures per vehicle. Budget for regular small fixes: the 4.2 advisories per bike suggest wear items like brake pads and cables need attention, so factor in ongoing consumables before you buy.

The 2004 BMW K Series passes its MOT first time at roughly the UK average rate (92.9%) — solid but worth checking this vehicle's history carefully.

⚠️ 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

92.9%

UK average ~80%

Better than average

Dangerous (ever)

15%

At least once in MOT history

Check this vehicle

Avg failures / car

0.89

Over 10.8 tests on record

Moderate

Typical mileage

23k

Middle half: 15k–34k

For context

✅ Good baseline reliability. A 92.9% 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 4.2 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 474 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?

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 474 BMW K Series cars.

Before you buy a 2004 BMW K Series

Based on MOT data from 474 vehicles — here's what to check.

📋 Check the full MOT history. 15% 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

Colour Breakdown

Based on 14,771 BMW K Series vehicles registered in the UK — across all years. From DVLA registration records.

Blue 18.7%

2,761

Grey 18.4%

2,717

Red 16.2%

2,399

Silver 13%

1,915

Black 11.5%

1,705

White 7.2%

1,070

Yellow 4%

596

Green 3.5%

515

Maroon 2.2%

330

Beige 2.1%

308

Orange 1.9%

276

Bronze 1.2%

179

Mileage Distribution

Most 2004 BMW K Series 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.

22,826

typical

14,773

low mileage

34,117

high mileage

Half of all 2004 BMW K Series vehicles fall between 14,773 and 34,117 miles.

Is the mileage you're seeing normal?

✓ Under 14,773 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.

✓ 14,773–34,117 miles — normal for age. This is where most 2004 BMW K Seriess sit.

⚠ Over 46,057 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2004 BMW K Series — Still on the Road

Numbers are thinning — 48% of 2004 BMW K Seriess are still active.

Numbers are declining — 124 vehicles still getting MOTs in 2025 (48% 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

10.8

Avg MOT tests per vehicle

0.89

Avg failures per vehicle

4.2

Avg advisories per vehicle

Other model years — BMW K Series: All K Series years → Which year to buy? →

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Compare with another model

See how the 2004 BMW K Series stacks up against a rival.

Average reliability — agree?