MORGAN ROADSTER (2018)
Running costs, reliability data, and common problems from 104 real MOT tests.
Annual Cost
£2,192
£183/month
MOT Pass Rate
84%
Good
Road Tax
£195
Flat rate/year
Insurance
Grp 35-50
3721cc Petrol
Solid Option
84% pass rate, £2192/year to run. Close to the national average.
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Annual Running Costs
~30 mpg
Flat rate (post-2017)
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the MORGAN brand average of 92%.
At 8 years old, 84% of MORGAN ROADSTERs from 2018 passed their MOT first time in 2026. That's based on 104 tests across the UK. The average mileage at this age is 7,425 miles.
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How Does It Compare?
Mileage Analysis
7,425
Average miles
59,200
Expected for age
The average 2018 MORGAN ROADSTER has 7,425 miles on the clock, which is significantly below the expected 59,200 miles for a 8-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
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Best Year to Buy?
The most reliable year is the 2004 model with a 100% MOT pass rate, while the 2014 model has the lowest at 84%. The 2018 sits between the two at 84%.
MORGAN ROADSTER by Year
| Year | Pass Rate | Tests | Avg Mileage | |
|---|---|---|---|---|
| 2019 | 93% | 54 | 8,077 mi | |
| 2018 | 84% | 104 | 7,425 mi | |
| 2017 | 90% | 58 | 12,141 mi | |
| 2016 | 99% | 73 | 17,467 mi | |
| 2015 | 91% | 58 | 12,890 mi | |
| 2014 | 84% | 89 | 15,018 mi | |
| 2013 | 98% | 42 | 19,101 mi | |
| 2012 | 97% | 31 | 17,537 mi | |
| 2011 | 96% | 46 | 16,271 mi | |
| 2010 | 90% | 93 | 19,088 mi | |
| 2009 | 98% | 61 | 25,432 mi | |
| 2008 | 96% | 49 | 22,877 mi | |
| 2007 | 92% | 49 | 30,192 mi | |
| 2006 | 95% | 40 | 38,419 mi | |
| 2005 | 96% | 89 | 29,945 mi | |
| 2004 | 100% | 80 | 30,899 mi |
Similar Cars to Consider
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About the 2018 MORGAN ROADSTER
The 2018 MORGAN ROADSTER is a performance with a 3721cc petrol engine. 104 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It sits in the bottom 88% of 2018 cars for MOT pass rates.
With an average of 7,425 miles at 8 years old, MORGAN ROADSTER owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.
2018 MORGAN ROADSTER Fuel Costs
The 3721cc 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 £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2018 MORGAN ROADSTER?
Total estimated annual running cost is £2,192 (£183/month), broken down as £1592 fuel, £195 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 84% pass rate. Keeping on top of servicing will help avoid surprises.
MORGAN ROADSTER Reliability Trend
The MORGAN ROADSTER has maintained consistent MOT pass rates across model years, varying by only 2 percentage points.
Buying a Used 2018 MORGAN ROADSTER
At 8 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 2004 model has the highest pass rate at 100%.
Common Issues to Watch For
Based on the 2018 MORGAN ROADSTER's fuel type, age, and engine size, these are the most likely problem areas to check.
Timing Chain / Belt
Watch outAt 8 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.
Suspension Wear
Medium riskShock absorbers, springs, and anti-roll bar links typically need attention around this age. Listen for clunks over bumps and check for uneven tyre wear.
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 2018 MORGAN ROADSTER stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| MORGAN ROADSTER(2018) | 84% | £1592 | £195 | Grp 35-50 | £2192 |
| MERCEDES C(2016) | 88% | £1592 | £250 | Grp 35-50 | £2247+£55 |
| AUDI A6(2016) | 89% | £1592 | £250 | Grp 35-50 | £2247+£55 |
| PORSCHE CAYENNE(2019) | 95% | £1592 | £190 | Grp 35-50 | £2037-£155 |
| PORSCHE 911(2018) | 96% | £1592 | £190 | Grp 35-50 | £2037-£155 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
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