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Garage · Car · 2026 · McLaren MCL40

MCL402026 SEASON · MERCEDES POWER · CARBON MONOCOQUE · 798 KG

McLaren's 2026-rules debut. Lighter than its predecessor, narrower in the front, dramatically more efficient through the high-speed corners that won 2025. Tested in 14 wind tunnels and not yet beaten on a real one.

Top-down schematic · production spec · Round 21

Front wing · 8-elementBib · adjustable rakeHalo · MCL40-specSidepod scoop · 26mm narrowerBeam wing · 2-elementDiffuser · simplified gurney

Spec sheet · MCL40 · 2026 Round 21

DesignationMCL40 · 60th McLaren-built F1 chassis
ChassisCarbon-fibre monocoque · McLaren MCC-T9
Power unitMercedes-AMG M16 EQ Power+ (1.6L V6 turbo hybrid)
Output~ 1,030 bhp combined · 100% sustainable fuel
Weight798 kg (with driver) · class minimum
Length5,420 mm · -180 mm vs MCL39
Wheelbase3,580 mm · longer for new aero map
Width1,990 mm
Gearbox8-speed sequential · seamless-shift
ERS deployment350 kW (475 hp) · 350% increase under '26 rules
TyresPirelli P Zero · 18" · narrower spec
Front brakeAkebono carbon-carbon · MCL40-A

Upgrades · 2026 to date

BAHRound 1
AeroLaunch spec

MCL40 launch package, front wing, sidepod, floor.

Cleaner sheet design for the 2026 ground-effect rules. Pre-season correlation was the closest McLaren reported in five years.+0.4s baseline

MIARound 5
Aero

Floor edge & diffuser revision, increased rear load.

Solved a high-speed exit problem first seen in Jeddah. Norris went from P3 quali to P1 in three rounds.+0.18s

SPARound 12
Mech

Rear suspension geometry · pull-rod outboard.

Major mid-season rework. Sacrificed launch performance for kerb-riding gains; cost two grid penalties for assembly disputes.+0.12s

MZARound 16
Aero

Low-downforce rear wing variant, Monza-spec retained.

Originally a Monza one-off; retained for Vegas and Qatar. The team's first low-DF wing to beat Red Bull on the straight.+0.09s on straight

USARound 19
Power

Mercedes engine upgrade · 3rd of 4 allocations used.

Calibration update at COTA, small power, larger driveability gain. ANT and HAM got the same.+0.06s

MEXRound 20
AeroLaunch spec

Thin-air sidepod intakes, Mexico-only variant.

Bigger cooling apertures for 2,240m altitude. Heavier on the straights; will not be retained.-0.05s in clean air

Active technical directives

TD-039 · 4 Oct 2026 · ACTIVE

Flexible front wing, stricter deflection limits, +50% tests at scrutineering.

Introduced after the Belgian GP. Forced McLaren to reduce front-wing flex by ~3mm at 100kg load. The team say it's worth a tenth they're confident they can recover via stiffness.

TD-041 · 22 Oct 2026 · CLARIFICATION

Bib stiffness, clarification of how plank wear is measured at the bib.

Issued after Austin. McLaren's adjustable-rake bib was on the leading edge of legality; the clarification doesn't change interpretation but tightens enforcement. Floor camera mandates added.

TD-027 · 8 May 2026 · CLEARED

Engine mode mapping, equality across qualifying and race.

Closed Mercedes-engine drivers' qualifying-mode advantage. McLaren were already compliant; the change cost Red Bull ~0.05s in pure quali pace.

Where the MCL40 wins

Aero

Avg downforce coeff · 2026 ranks

MCL FER RBR MER WIL AST
Best wind-tunnel+6% vs P2

Tyres

Avg tyre deg · 50-lap stint (s/lap)

MCL RBR FER MER WIL AST
Lower is better0.05s/lap

Straight-line

Top speed rank by track

BAHEMIMZAMEX
MCL closing gap to RBR

Reliability

DNFs by team · 2026

MCL MER FER RBR WIL AUD
1 mechanical · yearBest