Cadillac CTS (2005)
Estimated running costs and MOT pass rates from 73 MOT tests in 2024.
Annual Cost
£2,958
£247/month
MOT Pass Rate
75%
Average
Road Tax
£445
Estimated/year
Est. Insurance
Grp 30-42
2792cc Petrol
Check Carefully
75% pass rate, £2,958/year to run. 7 points below average.
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Annual Running Costs
~30 mpg
Estimated CO2 band
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
Average reliability. Expect some repairs as it ages. That's 7 points below the average of 82% across all models in our data. It falls below the Cadillac brand average of 88%.
75% of MOT tests on Cadillac CTSs from 2005 ended in a pass in 2024, when they were about 19 years old. That's based on 73 tests across the UK, retests included. The average mileage recorded at those tests was 72,414 miles.
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Mileage Analysis
72,414
Average miles
140,600
Expected for age
The average 2005 Cadillac CTS had 72,414 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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About the 2005 Cadillac CTS
The 2005 Cadillac CTS is a large car. Our records list a 2792cc petrol engine, though engines vary between versions. 73 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. Among all models from 2005, the average MOT pass rate is 72%, and this model beats that benchmark.
With an average of 72,414 miles recorded at its 2024 MOT tests, Cadillac CTS owners tend to use this car less than the typical driver.
2005 Cadillac CTS Fuel Costs
The 2792cc 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 Cadillac CTS?
Total estimated annual running cost is £2,958 (£247/month), broken down as £1,958 fuel, £445 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 75% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2005 Cadillac CTS
At 21 years old, the Cadillac CTS 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. Note: with only 73 tests in our data, these figures should be treated as indicative rather than definitive.
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 outAt 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 riskLarger 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 outAt 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 outRubber 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 riskAlways 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 Cadillac CTS 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 |
|---|---|---|---|---|---|
| Cadillac CTS(2005) | 75% | £1,958 | £445 | Grp 30-42 | £2,958 |
| Land Rover Freelander(2007) | 75% | £1,958 | £790 | Grp 35-50 | £3,303+£345 |
| Audi TT(2007) | 80% | £1,958 | £445 | Grp 25-38 | £2,808-£150 |
| Saab 9-3(2007) | 76% | £1,958 | £445 | Grp 30-42 | £2,958same |
| Mercedes E(2004) | 78% | £1,958 | £790 | Grp 35-50 | £3,303+£345 |
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 Cadillac CTS
Is the 2005 Cadillac CTS reliable?
Average reliability. Expect some repairs as it ages. 75% of MOT tests on 2005 Cadillac CTSs ended in a pass, from 73 tests (DVSA MOT data for tests in 2024, retests included). That's 7 points below the average of 82% across all models in the same data.
How much does a 2005 Cadillac CTS cost to run?
Our estimate is £2,958 a year (£247 a month): £1,958 fuel, £445 road tax, £55 MOT and £500 predicted repairs, based on 7,400 miles a year. Insurance is not included.
What is the MOT pass rate for a 2005 Cadillac CTS?
75% of 73 MOT tests on the 2005 Cadillac CTS ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 229th of 504 models first registered in 2005 (top half).
What is the average mileage for a 2005 Cadillac CTS?
The average mileage recorded at MOT tests on the 2005 Cadillac CTS is 72,414 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.
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