automotivebriefs
9:17in productionCh. 1 · The Engine Swap/ 9:17 · ceiling 15 min
Racing · Endurance

Mercedes-Benz CLK LM

AMG · 1998

A single-season pivot, not a pinnacle — built to win a championship that vanished the moment it did.

The Mercedes-Benz CLK LM is a 1998 Group GT1 racing car built by Mercedes-Benz and AMG to win the FIA GT Championship. It uses a naturally aspirated M119 V8 with a flat-plane crankshaft, replacing the CLK GTR’s V12. Two road-legal CLK LM Straßenversion chassis were built for homologation — one destroyed in crash testing. It won every 1998 FIA GT race but retired from the non-championship 1998 24 Hours of Le Mans. Five chassis were built in total: three race, two road-legal. Mercedes ended its GT1 programme after 1998 when the FIA removed the GT1 class.

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Chapters & takeaways4
  1. 0:50
    The Engine Swap

    It replaced the CLK GTR’s V12 with a flatter-cranked, naturally aspirated V8 for reliability.

  2. 2:19
    The Straßenversion

    Two road-legal chassis were built — one destroyed — to satisfy FIA GT homologation rules.

  3. 3:41
    Undefeated, Then Unfinished

    It won every 1998 FIA GT race but retired from Le Mans due to lubrication failure.

  4. 5:16
    One Season, Then Gone

    Mercedes exited GT1 entirely after 1998 when the FIA scrapped the class.

Worth your time?

Yes. Drive the whole thing.

4/ 5
What works
  • wins every 1998 FIA GT race
  • delivers engine reliability where CLK GTR failed
  • executes homologation exactly: two road-legal chassis, one crash-tested
What does not
  • use forced induction
  • race at Le Mans successfully
  • survive beyond 1998 as a competitive platform
Drive it if
  • readers who track how regulations shape machines
Skip it if
  • those who conflate racing success with road relevance
The written brief1 min read

What the car is and where it came from

A Group GT1 racing car built by Mercedes-Benz and AMG in 1998. It is a re-engineered successor to the CLK GTR, developed solely for the FIA GT Championship.

How it works, in terms someone would actually use

It uses a naturally aspirated M119 V8 — the GT 108B — with a flat-plane crankshaft, replacing the CLK GTR’s V12. The engine was chosen for reliability over peak power. A road-legal homologation version, the CLK LM Straßenversion, was built to meet FIA GT Championship rules.

What it gets right

It wins every 1998 FIA GT Championship race. Its engine swap delivers reliability where the CLK GTR failed. Its homologation path is executed exactly: two road-legal chassis, one crash-tested.

What it does not

It does not survive beyond 1998 as a competitive platform. It does not race at Le Mans successfully. It does not use forced induction or a V12.

What it changed

It ended Mercedes’ GT1 effort after one season, when the FIA removed the GT1 class. That closure forced Mercedes into LMGTP and the ill-fated CLR.

Who it is for, and who it is not

It is for readers who track how regulations shape machines — not enthusiasts seeking emotional resonance or design lineage. It is not for those who conflate racing success with road relevance.

Is it worth your time

Yes — if you care about how a factory motorsport programme pivots under regulation, not legend. It is a precise, short-lived response to a rule change, not a long-term statement.

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