2008 Buick Lacrosse: what breaks, and at what mileage

What owners report breaking

Owners have reported 34 named failure modes on the 2008 Buick Lacrosse, and the three most-reported carry 33% of everything filed, which is an unusually even spread for one model year.

Other electrical problem leads with 42 reports, about 0.5 per 1,000 vehicles and with the middle half of reports between 38k to 85,000 miles.

Airbag warning light or occupant sensor fault follows with 40 reports, usually reported between 42k to 75,000 miles.

Other lighting problem follows with 31 reports, usually reported between 40k to 90,000 miles.

By system, the reports fall mostly into electrical (82), lighting (58) and airbag (52).

How bad it is when it goes

Across the named modes, 14 mention a crash, 9 a fire and 5 an injury. Those are the words owners used in their own complaints, and NHTSA does not verify them, but they are the closest thing in this data to a measure of what a failure actually did.

The average severity weight across every report on this year is 3.48, where a stalled engine or a failed airbag weighs many times more than a rattling trim panel, and a figure this high means the reports are dominated by failures with safety consequences rather than annoyances. The weighting is set out in full on the methodology page.

What the top failures cost to put right, as editorial estimates for an independent US shop rather than figures from NHTSA: other electrical problem at $250–$2,000, airbag warning light or occupant sensor fault at $300–$1,600, other lighting problem at $120–$1,200 and headlight failure or clouding at $150–$1,800. Dealer labour, a seized bolt or a part that is no longer made can push any of these past the top of its range.

12% of the reports on this year sit in the engine, transmission, drivetrain or cooling systems — the four where a repair bill is usually four figures.

How often, against how many were built

Scaled by an estimate of how many of these cars exist, the 2008 Buick Lacrosse draws about 3.7 per 1,000 vehicles, which puts it in the 83rd percentile of complaint rates among 2008 vehicles we can rate.

That denominator is the weakest number on the page and it is fair to say so plainly. Rate per 1,000 uses a fleet-size estimate derived from recall paperwork for this exact model year. It is a lower bound.

The working figure is 92,403 vehicles. If the true number is twice that, every rate on this page is half what it says; the ranking against other 2008 vehicles, which is what the risk score uses, is far more robust than the rate itself.

Recalls on the 2008 model year

NHTSA has issued 2 recall campaigns covering the 2008 Buick Lacrosse, affecting an estimated 113,861 vehicles. A recall is a different kind of evidence from a complaint: it is the regulator and the manufacturer agreeing that something has to be fixed, and the fix is free for as long as the car exists.

The campaigns cover exterior lighting:headlights and electrical system:ignition. Whether the work was actually done on the car in front of you is a question only the VIN can answer, and the manufacturer or NHTSA will answer it free.

One caution about reading these together: a recall usually raises the complaint count for the same part, because owners who read about it go and file. The mileages stay informative; the counts get noisy.

How 2008 compares with the other years

High risk for a 2008 — 333rd riskiest of the 356 2008 vehicles we can rate. Every score on this site is a rank inside its own model year, which is what makes a 2004 and a 2019 comparable at all.

Across the 14 model years of this car that carry enough reports to score, 2009 comes out best at 60 and 2011 worst at 73, with 2008 itself at 62.

No other year of this model scores meaningfully better than 2008, so if this generation is what you want, the year is not the lever.

Within the 2005–2009 generation specifically, 2009 is the strongest year at 60 and 2005 the weakest at 65.

What to look at before buying one

The mileages below are where the first quarter of reports for each mode had already been filed, which makes them the point at which a fault is worth looking for rather than the point at which it happens: other brake problem from about 3k, wiring harness or short circuit from about 20k, other body or interior problem from about 37k and other electrical problem from about 38k.

On a 2008 Buick Lacrosse with more miles than that on it, the useful question to put to a seller or a mechanic is whether other brake problem has been dealt with, and if so with what parts and at whose expense. A car that has already had the repair is in a different position from one that has not.

Treat it as where to point the inspection, not as a prediction. A well-maintained example can sail past every mileage on this page, and a neglected one can fail well before the first of them.

The limits of complaint data

343 owner reports; fleet size estimated from this year's own recall paperwork. Every count on this page is therefore a floor: it is the number of owners who went to the trouble of filing with a federal agency, which is a small and self-selected fraction of the owners who had the fault.

Of those 343 reports, 278 carried an odometer reading, so the mileages here describe 81% of the sample rather than all of it. Owners also round: readings pile up on multiples of ten thousand, which is why this site publishes "about 90,000 miles" and not "91,438".

The failure modes are assigned by software reading the owner's own words, which is accurate in bulk and wrong in individual cases. A mode with a handful of reports may contain a misfiled one.

And nothing here predicts what one car will do. These are other people's complaints, filed years apart, on cars maintained by strangers. Read the page as a map of where this model year has previously gone wrong, then have the specific car in front of you inspected.