Vauxhall Monaro (2005)

Estimated running costs and MOT pass rates from 221 MOT tests in 2024.

Annual Cost

£3,153

£263/month

MOT Pass Rate

85%

Good

Road Tax

£790

Estimated/year

Est. Insurance

Grp 35-50

5667cc Petrol

Solid Option

85% pass rate, £3,153/year to run. Close to the average across all models.

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Petrol5667cc21 years old221 tests73k miles avg

Annual Running Costs

Fuel (Petrol, 5667cc)

~30 mpg

£1,958

Road Tax

Estimated CO2 band

£790

MOT Test

£55

Predicted Repairs

£350

Total per year£3,153

Per month£263/mo

Per week£61/wk

Estimates based on 7,400 miles/year (UK average), petrol at 174.57p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included.

Reliability Verdict

85% MOT pass rate(Good)

0%All-model avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the average of 82% across all models in our data.

85% of MOT tests on Vauxhall Monaros from 2005 ended in a pass in 2024, when they were about 19 years old. That's based on 221 tests across the UK, retests included. The average mileage recorded at those tests was 73,102 miles.

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How Does It Compare?

Rank among 2005 models76th of 504(top 16%)

Rank among Vauxhall models479th of 870(bottom half)

vs average of all models+3%(82% avg)

vs 2005 models average+13%(72% avg)

vs Vauxhall average+1%(84% avg)

Mileage Analysis

73,102

Average miles

140,600

Expected for age

The average 2005 Vauxhall Monaro had 73,102 miles on the clock at its 2024 MOT, which is below the expected 140,600 miles for a 19-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Best Year to Buy?

Of the years with at least 100 tests, the 2006 model has the highest MOT pass rate at 92%, while the 2004 model has the lowest at 82%. The 2005 scores 85%. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

Vauxhall Monaro by Year

Year	Pass Rate	Tests	Avg Mileage
2007	85%	91	59,933 mi
2006	92%	230	64,233 mi
2005	85%	221	73,102 mi
2004	82%	201	88,110 mi

Similar Cars to Consider

Mercedes SL

2004 · 5513cc Petrol

£3,153/year

88%

+3%

Bentley Continental

2007 · 5998cc Petrol

£3,003/year

94%

+9%

Aston Martin DB9

2005 · 5935cc Petrol

£3,003/year

93%

+8%

Chrysler 300 C

2007 · 6063cc Petrol

£3,303/year

79%

-6%

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About the 2005 Vauxhall Monaro

The 2005 Vauxhall Monaro is a large-engined car. Our records list a 5667cc petrol engine, though engines vary between versions. 221 MOT tests were recorded on this model in 2024, making it a less common model in the UK market. It ranks in the top 16% of all 2005 models for MOT pass rate.

With an average of 73,102 miles recorded at its 2024 MOT tests, Vauxhall Monaro owners tend to use this car less than the typical driver.

2005 Vauxhall Monaro Fuel Costs

The 5667cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,958 per year with petrol at 174.57p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year).

What does it cost to own a 2005 Vauxhall Monaro?

Total estimated annual running cost is £3,153 (£263/month), broken down as £1,958 fuel, £790 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 85% pass rate. Keeping on top of servicing will help avoid surprises.

Vauxhall Monaro Reliability Trend

Newer Vauxhall Monaros pass their MOT more often than older ones, by 7 percentage points on average, which is mostly down to age and wear.

Buying a Used 2005 Vauxhall Monaro

At 21 years old, the Vauxhall Monaro is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2006 model has the highest pass rate at 92%.

Common Issues to Watch For

These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.

Timing Chain / Belt

Watch out

At 21 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.

Oil Consumption

Medium risk

Larger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.

Rust and Corrosion

Watch out

At 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.

Suspension Bushings

Watch out

Rubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.

Service History

Low risk

Always request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.

Running Costs Compared

How the 2005 Vauxhall Monaro stacks up against similar cars for estimated annual running costs, insurance group, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Est. Ins. Group	Total/yr
Vauxhall Monaro(2005)	85%	£1,958	£790	Grp 35-50	£3,153
Mercedes SL(2004)	88%	£1,958	£790	Grp 35-50	£3,153same
Bentley Continental(2007)	94%	£1,958	£790	Grp 35-50	£3,003-£150
Aston Martin DB9(2005)	93%	£1,958	£790	Grp 35-50	£3,003-£150
Chrysler 300 C(2007)	79%	£1,958	£790	Grp 35-50	£3,303+£150

Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.

Questions about the 2005 Vauxhall Monaro

Is the 2005 Vauxhall Monaro reliable?

Good reliability. Occasional issues but generally solid. 85% of MOT tests on 2005 Vauxhall Monaros ended in a pass, from 221 tests (DVSA MOT data for tests in 2024, retests included). That's 3 points above the average of 82% across all models in the same data.

How much does a 2005 Vauxhall Monaro cost to run?

Our estimate is £3,153 a year (£263 a month): £1,958 fuel, £790 road tax, £55 MOT and £350 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2005 Vauxhall Monaro?

85% of 221 MOT tests on the 2005 Vauxhall Monaro ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 76th of 504 models first registered in 2005 (top 16%).

Which year Vauxhall Monaro has the best MOT pass rate?

Of the years with at least 100 tests, the 2006 Vauxhall Monaro has the highest MOT pass rate at 92% and the 2004 the lowest at 82%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2005 Vauxhall Monaro?

The average mileage recorded at MOT tests on the 2005 Vauxhall Monaro is 73,102 miles, which is below the expected 140,600 miles for a 19-year-old car. This suggests lighter use than average, which generally means less wear on major components.