MCLAREN UNCLASSIFIED (2018)
Running costs, reliability data, and common problems from 60 real MOT tests.
Annual Cost
£2,042
£170/month
MOT Pass Rate
100%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 35-50
3799cc Petrol
Great Choice
100% pass rate, £2042/year to run. 18 points above average.
Check a specific MCLAREN UNCLASSIFIED
Enter a reg plate for full MOT history, mileage check, health score, running costs, and reliability data. Free, instant, no signup.
Annual Running Costs
~30 mpg
Flat rate (post-2017)
Low estimate due to excellent reliability
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
Get an insurance quote for this MCLAREN UNCLASSIFIED
Compare quotes and find the best deal
Reliability Verdict
Excellent reliability. Very few MOT failures. That's 18 points above the national average of 82%.
At 8 years old, 100% of MCLAREN UNCLASSIFIEDs from 2018 passed their MOT first time in 2026. That's based on 60 tests across the UK. The average mileage at this age is 28,270 miles.
Got a MCLAREN UNCLASSIFIED you're looking at?
Enter the reg plate to check its specific MOT history, mileage, and health score.
How Does It Compare?
Mileage Analysis
28,270
Average miles
59,200
Expected for age
The average 2018 MCLAREN UNCLASSIFIED has 28,270 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.
Looking at a specific MCLAREN UNCLASSIFIED?
Enter its reg plate for a free check with full MOT history, mileage verification, and predicted costs.
MCLAREN UNCLASSIFIED by Year
Similar Cars to Consider
Check a Specific Mclaren Unclassified
Enter a reg plate to get the full MOT history, health score, and mileage verification.
Upgrade to Premium (£4.99) for stolen, finance, and write-off checks.
About the 2018 MCLAREN UNCLASSIFIED
The 2018 MCLAREN UNCLASSIFIED is a luxury with a 3799cc petrol engine. 60 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 1% of all 2018 cars for reliability.
With an average of 28,270 miles at 8 years old, MCLAREN UNCLASSIFIED 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 MCLAREN UNCLASSIFIED Fuel Costs
The 3799cc 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 MCLAREN UNCLASSIFIED?
Total estimated annual running cost is £2,042 (£170/month), broken down as £1592 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 100% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
MCLAREN UNCLASSIFIED Reliability Trend
Older MCLAREN UNCLASSIFIEDs tend to have better MOT pass rates than newer ones, with an average decline of 7 percentage points across model years.
Buying a Used 2018 MCLAREN UNCLASSIFIED
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 60 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2018 MCLAREN UNCLASSIFIED'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 MCLAREN UNCLASSIFIED stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| MCLAREN UNCLASSIFIED(2018) | 100% | £1592 | £195 | Grp 35-50 | £2042 |
| MERCEDES C(2016) | 88% | £1592 | £250 | Grp 35-50 | £2247+£205 |
| AUDI A6(2016) | 89% | £1592 | £250 | Grp 35-50 | £2247+£205 |
| PORSCHE CAYENNE(2019) | 95% | £1592 | £190 | Grp 35-50 | £2037-£5 |
| PORSCHE 911(2018) | 96% | £1592 | £190 | Grp 35-50 | £2037-£5 |
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.
Related Mclaren Models
Explore other Mclaren cars or similar models in the same category.
MCLAREN 570
2018 · 3799cc Petrol
MCLAREN 600LT V8 S-A
2019 · 3799cc Petrol
MCLAREN 720S V8 S-A
2018 · 3994cc Petrol
MERCEDES C
2016 · 3982cc Petrol
AUDI A6
2016 · 3993cc Petrol
PORSCHE CAYENNE
2019 · 3996cc Petrol
Related Guides
In-depth articles relevant to the Mclaren Unclassified.
Cheapest Cars to Run in 2026: Real Data from 19.8 Million MOT Tests
9 min read
Reliability20 Most Reliable Used Cars UK 2026: Real MOT Pass Rate Rankings
10 min read
ReliabilityMost Reliable Used Cars UK 2026 (Data From 50M Real MOT Tests)
11 min read
Buying GuideFord Fiesta Common Problems (2026): What to Check Before Buying
13 min read
ReliabilityFord Puma Problems: 7 Issues Owners Report (2026)
13 min read
Check a specific MCLAREN UNCLASSIFIED
Enter the reg to see its MOT history, mileage check, and predicted costs.
Premium History Check
Buying a MCLAREN UNCLASSIFIED? Our premium check covers:
- Stolen check (PNC)
- Outstanding finance
- Write-off history (Cat A/B/N/S)
- Previous owners count
Competitors charge £10-£20 for the same data