Should I check the MOT history before buying a 2004 Vauxhall Monaro?

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 Vauxhall Monaro?

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 Vauxhall Monaro?

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 Vauxhall Monaro vehicles have had dangerous defects recorded?

27% 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 Vauxhall Monaro reliable?

Based on MOT data from 185 vehicles, the 2004 Vauxhall Monaro has a first-time MOT pass rate of 79.9%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2004 Vauxhall Monaro?

The most frequently recorded MOT issues on the 2004 Vauxhall Monaro are: Nearside Rear Tyre worn close to the legal limit (60.2% of vehicles), Offside Rear Tyre worn close to the legal limit (59.4% of vehicles), Front Brake pad(s) wearing thin (42.6% 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 2004 Vauxhall Monaro?

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.

CarHunch

Get Started

Vauxhall Monaro (2004)

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

2004 Vauxhall Monaro

CarHunch analysed 185 real MOT records for the 2004 Vauxhall Monaro. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →

On this page

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 Compare Models

The 2004 Vauxhall Monaro's 79.9% first-time pass rate matches the UK average almost exactly, but the real concern is that 27% of these vehicles have recorded dangerous defects—well above the typical threshold—which suggests buyers need to be especially thorough with pre-purchase inspections. With an average of 3.63 failures per vehicle and 23.8 advisories, these cars are racking up moderate repair issues, though the median mileage of just under 60,000 miles is relatively low for a 20-year-old car.

The low mileage suggests many have been cherished or lightly used, but the high advisory count points to age-related wear rather than abuse—seals, trim, and emissions equipment are probably showing their years. Before buying, have any Monaro on your shortlist inspected by a specialist familiar with this generation's common gremlins, particularly around cooling and electrical systems where age-related failures often cluster.

We have limited data for the 2004 Vauxhall Monaro — 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

79.9%

UK average ~80%

Around average

Dangerous (ever)

27%

At least once in MOT history

Check this vehicle

Avg failures / car

3.63

Over 17 tests on record

High

Typical mileage

60k

Middle half: 41k–74k

For context

These stats describe 185 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 185 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 60.2%

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

Brake wear 42.6%

Front Brake pad(s) wearing thin · Brake pipe slightly corroded · Offside Rear Brake pipe slightly corroded · …

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 2004.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 185 Vauxhall Monaro cars.

Before you buy a 2004 Vauxhall Monaro

Based on MOT data from 185 vehicles — here's what to check.

📋 Check the full MOT history. 27% 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 (98%)	182	79.9%	3.63

Mileage Distribution

Most 2004 Vauxhall Monaro 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.

59,958

typical

41,276

low mileage

74,083

high mileage

Half of all 2004 Vauxhall Monaro vehicles fall between 41,276 and 74,083 miles.

Is the mileage you're seeing normal?

✓ Under 41,276 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.

✓ 41,276–74,083 miles — normal for age. This is where most 2004 Vauxhall Monaros sit.

⚠ Over 100,012 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2004 Vauxhall Monaro — Still on the Road

Numbers are thinning — 63% of 2004 Vauxhall Monaros are still active.

90 vehicles still getting MOTs in 2025 — 63% 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

Avg MOT tests per vehicle

3.63

Avg failures per vehicle

23.8

Avg advisories per vehicle

Other model years — Vauxhall Monaro: All Monaro years → Which year to buy? →

2005 2006

Or browse all models: Vauxhall →

Compare with another model

See how the 2004 Vauxhall Monaro stacks up against a rival.

Watch for defects — worth knowing