Carsieve

Opel Astra G (1998-2006): known problems and buying guide

Built
1998–2006
Median price
€1,790
Listings
929
Running cost per month
€411–€472
Power
75–147 PS (55–108 kW)
Reliability
3/5
DIY
2/5

Check the timing belt record, rust under the car and the alternator before you buy an Astra G.

All versions

VariantRunning cost per monthMedian priceListingsFuelEngine codesGearboxProduction years
1.6 16V, 100 PS, 5-speed manual Research€455€1,400140PetrolManual (5)1998–2003
1.6, 85 PS, 5-speed manual Research€456€1,500108PetrolManual (5)2000–2004
1.6 16V, 100 PS, 4-speed automatic Research€472€1,99069PetrolAutomatic (4)1998–2004
Cabrio 2.2, 147 PS, 5-speed manual, convertible Research€472€2,20069PetrolManual (5)2001–2006
1.6, 75 PS, 5-speed manual Research€434€1,79962PetrolManual (5)1998–2000
1.2 16V, 75 PS, 5-speed manual Research€411€1,49956PetrolManual (5)2000–2003
Cabrio 1.8, 125 PS, 5-speed manual, convertible Research€456€1,85055PetrolManual (5)2001–2006

At a glance

  • Years: hatchback, saloon and Caravan built 1998 to 2004. Coupé and Cabrio, and some engines, run to 2006.
  • Reliability: 3/5. Several recurring faults. The timing belt on early 16V petrols is the costliest risk.
  • DIY: 2/5. Belt, alternator, EGR valve and rust repairs are workshop jobs.
  • Biggest risk: a torn timing belt on an early 16V petrol, which can total the engine.
  • Prefer: cars built from 2001 with proof of a timing belt change. Avoid: early 16V petrols with no belt record.

Engines and gearboxes

Alternator, EGR valve and air conditioning faults apply to all engines (see Known issues).

  • Petrol 1.2 16V, 48 kW 1998-2000, 55 kW 2000-2003. No common fault confirmed.
  • Petrol 1.6 8V, 55 kW 1998-2000, 62 kW 2000-2004. No common fault confirmed.
  • Petrol 1.6 16V, 74 kW 1998-2003, Z16XEP 76 kW 2003-2006. Timing belt risk on cars built up to 2001, see Known issues. The early 74 kW version (X16XEL) can burn oil at high mileage.
  • CNG 1.6, 71 kW 2003-2005. No common fault confirmed.
  • Petrol 1.8 16V, 85 kW 1998-2000, 92 kW 2000-2006. Timing belt risk on cars built up to 2001, see Known issues.
  • Petrol 2.0 16V, 100 kW 1998-2000, 118 kW 1999-2001. Timing belt risk, see Known issues.
  • Petrol 2.0 Turbo, 140-147 kW 2000-2006 (OPC, Coupé and Cabrio). No common fault confirmed.
  • Petrol 2.2 16V, 108 kW 2000-2006. No common fault confirmed.
  • Diesel 1.7, 50 kW 1998-1999, 55 kW 1999-2003, 59 kW Z17DTL 2003-2004. No common fault confirmed.
  • Diesel 2.0, 60 kW 1998-2002, 74 kW 1999-2004. No common fault confirmed.
  • Diesel 2.2, 92 kW 2000-2006. No common fault confirmed.

Gearboxes:

  • 5-speed manual. No common fault confirmed.
  • 4-speed automatic. No common fault confirmed.

Known issues

Issue Affects Typical km Repair cost
Timing belt breaks on early 16V petrols 16-valve petrols built up to 2001 Not stated 260-500 EUR for a belt change (Germany, 2025); a torn belt can total the engine
Rust on rear wheel arches and front subframe All Not stated No confirmed price
Alternator failure Petrol and diesel Not stated 530-1,020 EUR at a workshop (Germany, 2025)
EGR valve blockage Petrol and diesel Around 80,000 km No confirmed price
Air conditioning compressor All; most reports for cars up to 2000 Not stated No confirmed price
Oil use at high mileage Early 1.6 16V petrol, 74 kW (X16XEL) High mileage, no figure given No confirmed price
Ignition lock and immobiliser All Not stated No confirmed price

Before you buy

  1. Ask for proof of a timing belt change on any 16V petrol built up to 2001. No proof means budget for a belt change at once, at 260-500 EUR.
  2. Start the engine and check that the battery warning light goes out. A light that stays on points to a failed alternator. Ask whether it was replaced.
  3. Look under the car at the rear wheel arches and the front subframe mounts. Rust that has gone through the metal means a repair.
  4. Ask whether the EGR valve was cleaned or replaced. It often fails by about 80,000 km.
  5. Switch on the air conditioning and check that it blows cold. Ask whether the compressor was replaced.
  6. Check the oil level on the dipstick and ask for oil change records. The 1.6 16V (X16XEL) can burn oil at high mileage.
  7. Turn the key through all positions and start the car several times. The key should turn smoothly and the car should start every time. A sticking lock or a car that will not start points to the ignition lock or immobiliser.

Running costs

Operational€231
Workshop€135
Fixed costs (tax, insurance)€102
Total per month€468
New-car depreciation (not included)€28

ADAC figures for 15,000 km a year over 60 months

Market

Listings on mobile.de priced up to 50,000 EUR, 29 October 2026.

Find offers on mobile.de

Listings
929
25th percentile
€1,200
Median price
€1,790
75th percentile
€2,500
Median mileage
170,000 km
Median first registration
2002
Dealer share
16.7%
Price at 100,000 km
€2,354

To check a listing's price, open its variant in the table above. Each variant page has a price check.

In detail

Timing belt breaks on early 16V petrols

The timing belt drives the valves. If it tears, the engine can be totalled. The 16-valve petrols (1.6, 1.8 and 2.0) are the most prone, and the damage piles up on cars built before 2001. The tensioner, which keeps the belt tight, can fail; changed tensioner pulleys came from model year 1999, so later cars are at lower risk. The belt interval is 60,000 to 150,000 km or 4 to 10 years, depending on engine. Change the belt and tensioner on time, and early if there is no record. A belt change costs 260-500 EUR at a workshop (Germany, 2025).

Sources: Auto Zeitung, AUTO BILD, AutoScout24, ADAC

Rust on rear wheel arches and front subframe

Rear wheel arches, the body panels around the rear wheels, can rust badly. The front subframe, the steel cradle that holds the front suspension and engine, can rust heavily too. Check the middle of the three subframe mounts, behind the front strut, which often rots through. No repair cost is stated. Do not assume a car is rust-free.

Sources: ADAC, Motor-Talk buyer guide, Za Rulem, Motor-Talk forum

Alternator failure

The alternator charges the battery while the engine runs. It is a common cause of breakdowns on both petrol and diesel cars. A workshop job costs 530-1,020 EUR (Germany, 2025). The part alone cost 270 EUR (Germany, 2009).

Sources: Auto Zeitung, Motor-Talk buyer guide, ADAC

EGR valve blockage

The EGR valve (exhaust gas recirculation valve) feeds some exhaust gas back into the engine to cut emissions. It can clog or fail, often already at about 80,000 km, and is a known cause of breakdowns. No repair cost is stated.

Sources: AutoScout24, ADAC, Motor-Talk buyer guide

Air conditioning compressor

The air conditioning compressor, the pump that drives the cooling, can fail. Most failures are on cars up to model year 2000, but later cars are not ruled out. No price is stated.

Sources: AUTO BILD, AutoScout24, Motor-Talk buyer guide

Oil use at high mileage

The 1.6 16V (X16XEL) can use a lot of oil at high mileage. Check the dipstick on a viewing, and look for blue smoke when you accelerate. No repair cost is stated.

Sources: ADAC, Motor-Talk forum

Ignition lock and immobiliser

The ignition lock can stick, and the immobiliser (the anti-theft system that checks the key) can fail. A blocked steering lock can stop the car being driven. Both are known causes of breakdowns. No repair cost is stated.

Sources: ADAC, Auto Zeitung, Motor-Talk buyer guide

Recalls

Country Code Years What is done
Germany not given Built 2003 to 2005; announced 2008 Covers the Astra G and the Astra H. The oil pressure sensor in the cylinder head is replaced by a blanking plug, and the one in the engine block by an improved part. Free, about one hour. The recall notice names the 1.6 (Z16XEP).

Sources: AUTO BILD, ADAC

Maintenance

  • Timing belt: change it every 60,000 to 150,000 km or every 4 to 10 years, depending on engine; check the interval for your engine. Keep the invoice as proof.
  • Engine oil: the 1.6 16V (X16XEL) can burn oil at high mileage, so check the dipstick often.

Sources

German

Russian