The vehicle

Chevrolet Tahoe

Forty-eight entries across twenty-four Michigan tests, 1997 to 2026. No other vehicle has been in the books so long — and none has changed so much.

Every test

The principal car each year, with the best braking any Tahoe recorded that year. Four-wheel-drive and E85 variants are in every Tahoe entry.

Three years at ninety-eight miles an hour

Between 2002 and 2004 the Tahoe’s top speed falls off a cliff — from 121 mph in 1999 to 98, and stays there for three tests before returning to 124 in 2005.

The car did not become twenty-three miles an hour slower. The 2002 book carries Michigan’s own limiter footnote against those entries: the figure reports an electronic setting. General Motors had decided what a Tahoe was allowed to do, and Michigan wrote down the decision rather than the capability.

It is the clearest example in the archive of a number that looks like a measurement and is not — which is a problem that runs through the whole top speed column after 1995.

The braking, which is the real story

Forty-four feet between the worst figure and the best is the largest improvement any vehicle has made in this programme. And because the procedure got harder in 2014, the real gap is wider than the numbers show.

The three poor years from 2018 to 2020 are worth noticing rather than smoothing over. Something was wrong, it persisted across three evaluations, and it was fixed. The archive records the problem and the repair because it records every year rather than the good ones.

The vehicle that outlasted the argument

In 1997 the Tahoe was one of five sport utilities in a field that had just lost the Caprice, and the following year Ford refused to let its own trucks run the road course at all, stating they were not designed or intended for pursuit.

In 2012 the Tahoe recorded 139 mph against 130 for the brand-new Ford Police Interceptor sedan — though a Caprice ran 154 in that same test, so the argument was not over. It ended in 2019, when a sport utility was the quickest and fastest four-wheeled vehicle in the evaluation; only the motorcycles beat it.

By 2025 there was no police sedan in the test at all. The Tahoe was still in it, in its twenty-third appearance, stopping better than it ever had.

Where it sits in the record

Holding the longest stop by any sport utility and one of the shortest by anything is, as far as this archive shows, unique to this vehicle. The outright worst figure belongs to a 1980 Ford LTD-S, at 187.9 feet.