HARLEY-DAVIDSON FLHTCUTG TRIGLIDE UL 1745 18 (2018)
Running costs, reliability data, and common problems from 39 real MOT tests.
Annual Cost
£1,927
£161/month
MOT Pass Rate
87%
Good
Road Tax
£195
Flat rate/year
Insurance
Grp 18-32
1745cc Petrol
Solid Option
87% pass rate, £1927/year to run. 5 points above average.
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Annual Running Costs
~36 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%.
At 8 years old, 87% of HARLEY-DAVIDSON FLHTCUTG TRIGLIDE UL 1745 18s from 2018 passed their MOT first time in 2026. That's based on 39 tests across the UK. The average mileage at this age is 7,760 miles.
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How Does It Compare?
Mileage Analysis
7,760
Average miles
59,200
Expected for age
The average 2018 HARLEY-DAVIDSON FLHTCUTG TRIGLIDE UL 1745 18 has 7,760 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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About the 2018 HARLEY-DAVIDSON FLHTCUTG TRIGLIDE UL 1745 18
The 2018 HARLEY-DAVIDSON FLHTCUTG TRIGLIDE UL 1745 18 is a family car with a 1745cc petrol engine. 39 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It sits in the bottom 76% of 2018 cars for MOT pass rates.
With an average of 7,760 miles at 8 years old, HARLEY-DAVIDSON FLHTCUTG TRIGLIDE UL 1745 18 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 HARLEY-DAVIDSON FLHTCUTG TRIGLIDE UL 1745 18 Fuel Costs
The 1745cc petrol engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,327 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 HARLEY-DAVIDSON FLHTCUTG TRIGLIDE UL 1745 18?
Total estimated annual running cost is £1,927 (£161/month), broken down as £1327 fuel, £195 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 87% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2018 HARLEY-DAVIDSON FLHTCUTG TRIGLIDE UL 1745 18
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. Note: with only 39 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2018 HARLEY-DAVIDSON FLHTCUTG TRIGLIDE UL 1745 18'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.
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 HARLEY-DAVIDSON FLHTCUTG TRIGLIDE UL 1745 18 stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| HARLEY-DAVIDSON FLHTCUTG TRIGLIDE UL 1745 18(2018) | 87% | £1327 | £195 | Grp 18-32 | £1927 |
| VAUXHALL CORSA(2016) | 81% | £1137 | £30 | Grp 8-20 | £1572-£355 |
| FORD FOCUS(2016) | 87% | £1137 | £135 | Grp 12-25 | £1677-£250 |
| VOLKSWAGEN GOLF(2019) | 92% | £1137 | £190 | Grp 12-25 | £1582-£345 |
| VAUXHALL MOKKA(2016) | 80% | £1137 | £30 | Grp 8-20 | £1572-£355 |
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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