MERCEDES GL 320 (2006)
Running costs, common problems, and reliability data based on 77 real MOT tests in 2024.
MOT Pass Rate
90%
Total Tests (2024)
77
Avg Mileage
129,501 mi
Est. Annual Cost
£1,750
Is the 2006 MERCEDES GL 320 reliable?
Excellent reliability. Very few MOT failures. That's 8 points above the national average of 82%.
At 18 years old, 90% of MERCEDES GL 320s from 2006 passed their MOT first time in 2024. That's based on 77 tests across the UK. The average mileage at this age is 129,501 miles.
How does the 2006 MERCEDES GL 320 compare?
Mileage Analysis
The average 2006 MERCEDES GL 320 has 129,501 miles on the clock, which is in line with the expected 133,200 miles for a 18-year-old car, suggesting normal everyday use.
How much does a 2006 MERCEDES GL 320 cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
MERCEDES GL 320 by Year
Checking a specific MERCEDES GL 320?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2006 MERCEDES GL 320
The 2006 MERCEDES GL 320 is a large car with a 2987cc diesel engine. 77 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It ranks in the top 8% of all 2006 cars for reliability.
With an average of 129,501 miles at 18 years old, MERCEDES GL 320 owners drive about as much as the UK average.
2006 MERCEDES GL 320 Fuel Costs
The 2987cc diesel engine is on the larger side, so fuel won't be this car's strong point. Expect around 40 mpg in mixed driving, which works out to roughly £1,245 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2006 MERCEDES GL 320?
Total estimated annual running cost is £1,750 (£146/month), broken down as £1245 fuel, £250 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 90% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
MERCEDES GL 320 Reliability Trend
Older MERCEDES GL 320s tend to have better MOT pass rates than newer ones, with an average decline of 9 percentage points across model years.
Buying a Used 2006 MERCEDES GL 320
At 18 years old, the MERCEDES GL 320 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 77 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2006 MERCEDES GL 320
The MERCEDES GL 320 is actually the most reliable option among similar diesel large cars from this era. Here are comparable diesel cars with similar engines:
- BMW 3 SERIES (2008) 80% pass rate (-10%) from 48,705 tests
- LAND ROVER DISCOVERY (2006) 78% pass rate (-12%) from 17,245 tests
- AUDI TT (2008) 81% pass rate (-9%) from 16,046 tests
- LAND ROVER RANGE ROVER SPORT (2006) 81% pass rate (-9%) from 14,133 tests