Vauxhall Astra Sri+cdti 150 (2008)

109 real MOT outcomes analysed • 56.4% first-time pass rate

2008 Vauxhall Astra Sri+cdti 150

CarHunch analysed 109 real MOT records for the 2008 Vauxhall Astra Sri+cdti 150. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

This 2008 Astra diesel is significantly less reliable than the average UK car, with only 56.4% passing MOT first time against the national average of 80%—nearly a quarter of these vehicles fail their test. The good news is that dangerous defects are not prevalent in this cohort, but the real concern is the frequency of failures: averaging 1.37 faults per vehicle suggests these cars need regular attention to stay roadworthy.

With a median mileage of 129,200 miles for a 16-year-old car, these Astras have been driven hard, and that wear is reflected in the failure rate. Before buying one, get a pre-purchase inspection focused on the diesel engine and emissions systems, as these are typically where the money gets spent on older Vauxhalls of this generation.

Below average reliability 23.6% below UK average
56.4%
pass MOT first time
UK average: ~80%
129,200
typical mileage
109,063–147,751 middle half
0%
ever had a dangerous defect
recorded at any MOT
1.37
avg MOT failures per car
over 4.4 tests on record

What to check before buying a 2008 Vauxhall Astra Sri+cdti 150

Practical pre-purchase checks for this age and model.

  • 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
  • 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
  • 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
  • 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.

Before you buy a Vauxhall Astra Sri+cdti 150

MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.

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Mileage Distribution

Most 2008 Vauxhall Astra Sri+cdti 150 vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.

109,063
low mileage
129,200
typical
147,751
high mileage

Half of all 2008 Vauxhall Astra Sri+cdti 150 vehicles fall between 109,063 and 147,751 miles.

2008 Vauxhall Astra Sri+cdti 150 — Still on the Road

Numbers are declining — 18 vehicles still getting MOTs in 2025 (24% of peak).

17 18 2017 2025

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2017–2025.

MOT History Averages

4.4
Avg MOT tests per vehicle
1.37
Avg failures per vehicle
0
Avg advisories per vehicle

Found a specific Vauxhall Astra Sri+cdti 150?

Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.

UK

Other model years — Vauxhall Astra Sri+cdti 150:

2007